with the listings of business's for sale, can i expect to pay key money on top of the selling price? or will this be inclusive

You can always offer to pay for the copy of the keys yourself, thus reducing your initial purchase expense, don't forget to include it as an expense also in your expense column, thus doubling the benefit.

I think Nawtilus might be pulling your chain there sir.

For a detailed answer to your question, check out the business forum. Theres a key money thread there on the front page.