The CG market is too too random in general, so saying things like "If you have 20 HQ models you will earn 450$" is funny, add to that, that's what TS employee said it's even more funny... sure... you can earn 450$...no no acutally you can earn 1000$... with their royalty rates and prices... Every single model on TS you can find on other marketplaces for lot less because peoples on TS are trying to justify their income because of the TS greedy royalty rates. Long story short there is no guarantee for anything in CG bussines world, there can be a month where you sell models every day and after that months that you have 1-2-3 sale at best or no sales at all (I don't count projects). So it's up to person to decide what he/she want's to do, is it waste of time or not, is it profitable or not. If person decide to go for it and start selling models he she will face two (in my opinion here on cgt)main things: competition and unnecessary competition. To gain sales you have to first beat competition (competition=legit artists) by creating "better" assets than anybody else (just by looking at model section that you are interested in, you can instantly get picture how better you have to be and in some cases that's MUCH MUCH better) when you "achive" this than you have to beat unnesecery competition (thieves) who sells very very very HQ models stolen for 5$, so no matter how good you are it's hard to fight against this because its a waist of time to model HQ model so that you can sell that at 5$, so artist must get "creative" and "creative" is topic for some other time.