I have compiled this guide based on the kinds of questions buyers ask me or that I ask sellers.  I hope it helps!

Sizes

Uk sizes are different from US ones by being one or two sizes higher depending on which chart you look at!!  So a UK 12 is either a US 8 or 10.  European and other sizes can vary according to the Country.  It is always best to get the seller to measure for you if you are unsure rather than being disappointed.  Footwear sizing is equally difficult and I have been caught out taking the sellers conversion of a US size to a UK size and it being too small!

Branding

I would reccommend asking for the "make" of the item, if not supplied, especially on new clothing to help you assess its value.  I have won items which I then found out could have been bought cheaper in the high street(and without the added cost of postage!). Some clothing may have labelling removed to comply with UK trading regulations, this should be conveyed to you by the seller.

Post and packing

No one likes being overly charged for postage.  Look at other users selling similar items and compare.  You can then decide if the item is worth paying a higher cost for P&P.  Shoes and boots can be quite heavy as can outerwear.  If no postage cost shows on the listing, ask how much it is before bidding as you may end up paying a totally unrealistic ammount and you are then commited to the sale.

Problems

It goes without saying, that you should always try to resolve any issues with the seller, no mater how trivial, before leaving feedback.  Many "newer" users think the feedback forum is where to voice their complaints(even very minor ones) without firstly contacting the seller. Most sellers are genuine and are keen to keep buyers happy!!

I wish you all happy ebaying!!!!