A waste of money
I only use the upgrader as the cases have such horrendous edge that if you were to open them, at this point buy them from Valve, the edge is lower and you would actually receive the skin you've got. more than sometimes, the skin you won is unavailable so basically you will have to risk it again or have nothing. anyways, the upgrade is most likely fair, but its just so weird. did 5/10 dollar bets on 80x's and some 2x's the edge for the upgrader is 5% which is horrible, since there are so many better alternative casinos which have originals with 1-2% edge or whatever but having a 5% edge is like playing a blackjack hand all in, and not being able to split or double etc. its horrible. so, to the upgrade now, and some scummy behavior ive seen from this site. did 7 upgrades of 5/10 cash balance for a 45% chance hit one hit once, crazy. but definitely possible so it may not be rigged. whats suspicious though, is that when you actually win something, instantly theres a popup saying to rate the site, hahaha so disgusting. so when you lose you would NEVER see a pop up saying to rate the site, but ONLY when you win you will get this pop up, if they were legit and they wouldnt be rigging the provably fair system, (which is possible to do you can research) they wouldnt need to be doing that. anway. dont use this site if you wanna win something. find a better alternative. which even then, you would lose money long term.