How can i see the the contributor level for the games before i will give for gifts?

Asterisks and Math: While creating a giveaway you will see three different "types" of games:

First one has no mark, it will give CV according to american store price and the points needed to enter
Second one has one asterisk which means it falls into the "bundled" category, it will give 15 % of the american store price and points needed to enter
Third one has two asterisks which means it has been given away for free at a point in time. You will get no CV for that

You can use ESGST, it has this any many other features.