If you choose to start again, here is a bit more advise..
List an auction at a time when your target audience is likely to be around their computers and it isn't 4 in the morning:
http://www.timeanddate.com/worldclock/What I mean is you concentrate on the time zones in the US.
BTW, I think you did a good job otherwise. Your auction title basically replicated those meeting the most success (which is important for keyword searches), and the description is simple and to the point.
I must warn you that if you get an asshole buyer and even if he receives your item, he can get a full paypal refund upon a claim if you can't prove the item was delivered.
Listing an item with free shipping allows it to be placed higher in best match results, but if your item goes to +$100,
I'd eat the extra shipping cost and ship with registered post. It is worth the investment.
I like that you said you could provide the code via e-mail upon request. Good.
edit:
The only reason I made a mention of time, is that you want the auction to be ending at an hour where your target market is at their computers. I regularly have auctions treble in price in the space of the final hour.