Nah... you don't need to buy Scouts, they aren't always the best players anyway. For that matter -- a 5* 18 y.o. can be dreadful player and hard to change the attributes very fast (even if he gains quickly since he will slow @ 6) I tend to go for the super fast 3 or 4 star guys.

I have seen generated players on all my teams' TLs, a few different servers. They aren't appearing at the same time every day, but somewhat randomly. I have been on at odd hours (for me anyway) and found them.