Do it yourself. Get a VPN
(Doesn't work on all of them. ExpressVPN works best, it works on Urban VPN but its a free VPN so I don't really trust it. It didn't work on Nord when I tried it.)
Close game completely first.
Switch to Brazil servers then start the game up = profit.
EDIT: YOU DON'T HAVE TO OPEN GAME, YOU CAN BUY FROM HERE
AMERICAN DOLLARS CONVERSION:
R$3.90 = $0.71
R$18.90 = $3.42
R$54.90 = $9.92
R$112.90 = $20.41
R$189.90 = $34.33
R$379.90 = $68.68
This is the method that everyone else uses to buy cheap crystals for you, it's not against TOS and CANNOT get you banned.