okay ck.... let me ask you this, who is buying your fish, you or the parents? If the Parents (as I'M) tell them it is very important that this is done. You buy a fish and it may introduce a parasite in your tank and more than likely killing them. Now..... was it worth it? Fresh dips kill more fish than healing them.
Look on craigs list for a 10-20 gallon tank, nothing special and cheapy lights, thats all you need to be safe. Not really fare for you or your parents to be spending this money and possibly killing your critters right? my daughter (12) knows the importants of QT'ing the fish first so that should be telling ya something.