But the fact that some player may be worth 3M after 7-8 seasons if trained properly, doesn't mean that he is worth 300k today.
I only gave real example that such kind of investment gives real chances on good profit in the future for buyers (newbies etc. whoever he is). In place where I see chances, you see cheating...because newbies don't train (maybe BB managment should do more to encourage to train? Make it easier and more profitable?) Of course, maybe my players aren't the cheapest on the market currently, but if we talk about difference between 200k to 300k we are closer to real value than when you talk about numbers 30k to 300k. 200k to 300k is that crime you are talking about? By the way: in fact everybody do similar transactions all the time? Even Alonso. Let's check e.g. history of these two players:
(41683073),
(46424658). 550k more 10 days later, 1M more a month later on one player is ok? But 1M more on 10 players is crime.
Try to notice and understand that when I buy/sell a lot of players, my taxes are much bigger...so it has influence also on transfer of my regular players, which means also minus and additional cost of this investment. Few percentage more on 3-4M transactions is a lot. You don't see and count this. You see only purchase and selling costs and you count revenue basing only on these. It's not properly.