Like Joe said, its always in the first - and also in my opinion the last - part of the season.
In the beginning and half way my BB journey I was paying also to much for trainers.. for example 700k(!) for a L5.
Lost alot of money buying trainers and especially if you know I was only training until 21 yo.. wich means I needed faster a new youth trainer also..
Max money I spend now by being patient on a L5 is 300k, 450k for a L6
Max I spend on a youth trainer L5 is like 50k and a L6 75-100k
Patients is key on this part. And believe me it saves you a lot of money in the end.
GioDeb