Are you new to selling on ebay?
I recommend building up positive feedback score on ebay by buying stuff first. Since you have (0) feedback, if you get any negative or neutral feedback, you're pretty much hooped as far as ebay goes. I'm not sure what the policy is in the UK, but any negatives when you start out might result in deletion/suspension of your ebay account.
Watch out for ebayers with negative feedback. Be careful with ebayers whose native language is not english, any miscommunication could result in negative feedback. If someone who did not know what this was were to buy it and be unable to get it working, they might give you a negative feedback.
Anyways, just some advice :-D
