particles - difference between も and でも when used with the て-form

First of all, is there such a pattern as て-form + でも? I can't find it in my grammar dictionary. If there is, is it related to the て-form + も pattern, meaning something like "even if"? What is the difference?

Answer

Positive, to all of your questions.

10万円出してでも買いたい本
'a book one wants to buy even by paying 100,000 yen.'