How many keys would Killing Floor 2 ($30/₤20/€27) be worth when it's out?

I'll give you the key to my house!

Deal?

Thats like 15 keys unless i cant math

If we consider every key worth around 2 euros , that would be 13 keys + 2 sacks of gems at best ! so i guess the trade would ask you for 14 keys or maybe even 15 , depends on the country he is in.

16 keys probably unless the trader can get it for cheaper than $30.