If you're worried about buying an item on eBay, check them out first.
If they have a VAT number check that it is valid. Search google for valid vat number.
If there is a telphone number, call them. Get them to call you back on their landline, not their mobile.
Ask to pay by credit card to see if they have the facility. If they say they have then the chances are they will be an honest business. Either pay over the phone or tell them you will go back to eBay as you will be protected by Paypal.
Check their negative feedback by clicking on the number. Weigh these up for yourself. You will find that some of these will be undeserved but try to look at the whole picture.
That's about it
By the way we are an honest one! Call any time.