Guys, here's my experience.
Last season I joined and the season was over and the playoffs were almost over. The guy before me spent maybe 150k - 200k on scouting.
I got some good picks. After some training here and there (not that much training) and with a bad trainer most of the time, I sold my 1st round pick for 624k and my 2nd round pick for 300k. With taxes deducted I made a bit over 850k from selling these 2.
And I drafted middle to end of my league so I could've made even more if I drafted earlier.
Anyway it all depends on your league, your position and your luck you know. But I honestly don't think it's worth paying 40k a week or whatever.
Honestly 10k a week should definitely be enough. Cheers!