It's not a phrase I've heard before, but from the context I can see that it means that the price has to include a certain amount to cover the costs that were spent on marketing.
If so much money had not been spent on marketing, the computer could perhaps be put on sale for $1000, but the company needed to recoup some of the marketing costs, so they sold the computer for $2000 instead.
I don't know if "baking something into the price" is common parlance in business speak, when deciding how much to sell a product for.