Which of the following is not a condition for profitable bundling of multiple products

This study investigates the strategic influence of product complementarity and advertising on the success of bundling products. We use a profit maximization model to show that when a firm sells bundled products, both the product complementarity and advertising significantly impact the performance of bundled products. The bundling strategy with advertising can help firm achieve higher performance than the bundling strategy without advertising. However, the price discount to the identical products must be attractive to customers and the degree of product complementarity to the complementary products must be large enough, and then the bundling strategy with advertising can obtain a success in the market. Furthermore, our results also show that when the degree of the complementarity between two products increases, firm should invest less on advertising to promote the bundled products. Based on our results, we propose optimal marketing strategies for firms to adopt. Firm managers can utilize our findings to plan their bundling strategies wisely.

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Introduction

Bundling sales are becoming more and more popular in the business market, though the pricing and advertising of these bundles remains an extremely challenging task. Firms need to consider various issues, including segmented customer demand, product-specific costs, and consumers' multiple options. Furthermore, bundling decisions have significant implications for business managers and important influence on firm's marketing strategies as nowadays integrated and unique solutions become more common for firms' central market offering (Stremersch and Tellis, 2002, Venkatesh and Kamakura, 2003). Finally, bundling can also minimize consumer costs, depending on the number of items bundled, the value of those items, and the level of the variations (Estelami, 1999, Arora, 2008).

Because product bundling can offer economies of scale, bundle choices and sizes are significant for both consumers and sellers. Various product bundling strategies have been employed by different firms (Stremersch and Tellis, 2002, Arora, 2008). For example, many actual examples about complementary product bundling exist in the market, such as the bundle of DVD players and disks in BestBuy, the bundle of computer hardware and software in Staples, the bundle of Internet and Phone from Comcast, the bundle of fish pole and reel in Wal-Mart, etc. Furthermore, there are also a large number of examples about identical product bundles in the business market. For example, socks sales in Kohl's, car rent, auto tires, hotel booking, etc.

A related question is that once the decision to use the bundling strategy to sell products is made, what a firm needs to do to ensure that the bundling strategy is beneficial and successful. We show in our research that in order to maximize its profit, the firm needs to engage in an advertising campaign to promote the bundled products while ensuring the success of the bundling strategy (e.g., considering price discount, the degree of product complementarity, etc.) and making the bundling strategy perform more efficiently. The advertising can be defined, in our model, as seller-originated advertising that serves to inform the market of the existence and value of the bundled products. This advertising helps advertise the product quality characteristics, attractive price, discount, coupon and other promotions, in order to attract customers to buy.

Widespread actual examples have prompted various research models (Estelami, 1999, Stremersch and Tellis, 2002, Venkatesh and Kamakura, 2003, Arora, 2008), though none of prior models ever addresses bundling pricing policy and advertising strategy simultaneously for both identical and complementary products. We therefore propose a valuable model to address the optimal bundling price and advertising strategies for both identical and complementary products simultaneously. Furthermore, we also address the impact of the degree of complementarity between the two products on bundling pricing and advertising strategies. The degree of complementarity and the invested advertising should influence the advantages of bundling products and thus the optimum bundling that allows the firm to maximize its profit. Cournot (1938) and Stremersch and Tellis (2002) show if joint consumption is mandatory, firms should set an optimal price based on the value of the joint consumption. The firm's sales therefore depend on the price of the bundle, the degree of product complementary, and the effectiveness of the invested advertising.

Specifically, we utilize a profit maximization model to address the following main research questions: (1) What is the optimal bundling pricing for identical and complementary products, respectively? (2) What is the optimal advertising expenditure when firm invests advertising to promote the bundled products? (3) Is the bundling strategy with advertising always beneficial to firm? If not, under what conditions can firm benefit from such a strategy? (4) How does the invested advertising change as the degree of product complementarity changes? To answer these questions clearly, we consider and analyze three scenarios as follows.

Scenario 1: No bundling—firm sells two products separately.

Scenario 2: Bundling with advertising—firm sells the bundled products and invests advertising to promote the bundled products simultaneously.

Scenario 3: Bundling without advertising—firm sells the bundled products but does not invest advertising to promote the bundled products.

We then compare these scenarios and derive the optimal market strategies for the firm.

In the next section, we summarize relevant literature before we present our model with three different scenarios. The main results pertain to optimal policies and valuable comparisons are summarized in Section 3. The results of numerical examples are presented in Section 4. In Section 5, we end our paper with some conclusions and managerial implications.

Section snippets

Literature review

Many prior papers studied the product bundling from the different perspectives, such as price segmentation (Stigler, 1968), price discrimination (Adams and Yellen, 1976), product range restrictions (Eppen et al., 1991), reduced classification or processing costs (Kenney and Klein, 1983), and scope economies (Baumol et al., 1982). Furthermore, Guiltinan (1987) provides a normative framework that integrates most of these rationales, and McAfee et al. (1989) propose a model based on this framework

Scenario 1: benchmark model—no bundling

A single firm sells two products to consumers. We first introduce this benchmark model and the pricing decision when a firm sells these two products without a bundling policy. Demand for each product depends on its own price and the price of the other product. The decision variables for the two products are prices, p1andp2. Similar to Vives (1984) and Gupta and Loulou (1998), we assume that the demand functions are linear with regard to self- and cross-price sensitivities, so they appear as

Numerical examples

We derived our propositions analytically, yet the analytical expressions often are too complex to provide meaningful insights for the complementary products. Therefore, we undertake some numerical examples to illustrate the effect of the degree of complementarity between two products on firm performance. We also thereby illustrate the value of a bundling strategy with advertising for the firm's profit. For these numerical examples, the values of the various parameters we use appear in Table 4.

Conclusions and managerial implications

Our study makes theoretical and substantive contributions to extant literature. Specifically, we utilize a profit maximization model to study the value of the bundling strategy with advertising for both the identical and complementary products and demonstrate that optimal bundling pricing and advertising strategies exist for a firm that plans to sell products through a bundling strategy. We first analyze three scenarios: (1) no bundling, (2) bundling with advertising, and (3) bundling without

Acknowledgments

The authors gratefully acknowledge the Editor, Professor Harry Timmermans, and four anonymous reviewers for their constructive comments and suggestions that were instrumental in improving this paper.

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