For me I only bought sometimes scouts before.. but always very good players and bring me good results...
With the auction you never know.. Sometimes you have to pay 30-40 tokens for a 99% player.. the question is alway is he good or not??
With a 69 tokens scout is good for at least 2 or more seasons to stay at above 100%... And the rest just but 80% players so buuilt the team around a superstar or if you hve more tokens more than 1....