buyer's remorse..almost

i bought this silver ring from f21 two days ago, and i should have known when i saw the $3.80 price tag that this item was not built to last. the green finger was the only problem at first (and this was to be expected since it is obviously not real silver), but then i noticed that the silver was wearing off already! now there are what appears to be copper spots at various places on the ring. i am bummed because i thought i would be able to wear this almost every day, but now i am scared that it will transform entirely into copper..yikes! i guess this is a problem with all cheap products-there is a reason that you are paying so little. is it worth it to buy something cute, even if there is a chance it will not last a week, let alone a season?? xx