Pricing has been an intense research problem for a long time and my thesis mainly focuses on the pricing problem in the scenario where consumers often don’t know their exact valuations about the product before their purchase. After purchasing and using the product, they know their true valuations and then decide whether to keep the product or return it back to the seller with a refund. My dissertation work is mainly focused on how the sellers make use of such match uncertainty to orchestrate and design the optimal price prices and refund policies for different consumer segments in the market.