Best bet is probably going to be one of the exchange sites, the bigger ones are going to be LBC (Local Bitcoins) and then Paxful (pretty much like a little brother to LBC) They're going to allow small amounts but you're going to have to have to make sure to note the high fees on places like this, as you're going to be doing P2P exchanging.
Also, you're going to need to have some sort of way to prove that this wasn't one of those credit card fraud purchases - easily by just simply buying this item with cash and saving the receipt to show to the seller.
yes sound that you have to go through this route tho i don't like p2p .