I wouldn't buy something on a game using real money if I could work for it myself. I don't advise you to spend this money on era, $10 for 27,500 gralats just isn't worth it when you can dig a few (and I dont mean a few, I mean a lot of) shovels and get that money. It just makes you feel better knowing you worked for something rather than taking short cuts. I suggest saving the money and using it to buy something else, maybe some cool new games.