There are loads of fakes out there being sold and probably the majority of the ones on ebay are as well.

Quality is an issue that should be looked at, usually fakes are made with a poorer quality material unlike the legit ones. You can also tell if it doesnt come with a box as all genuine nike shoes come with boxes.If you do receive a box make sure you read the label that tells a description of the shoe and make sure it is the right colour. Far away you cannot really spot that they are fakes its up close when they can be identified.

Also if you see a odd colour pair of shoes they could also be fakes. I doubt that a rainbow colour pair of Nike Tn's are real. Not to mention the burberry and louis vuitton one's that ive seen around.

Dont be afraid to ask the seller questions about the products, just because he or she has a high feedback doesnt mean that all his/her products are real this just means that other buyers have failed to spot this.

usually on Nike Tn's the swoosh logo isnt big. Normally its a small one, this is a favourite technique of mine that i use to spot fakes.

and also on the air max 95 a quick simple way to find out if its fake is to see on the tongue. If it has the air max logo sewed then the chances are its real unlike where the fakes have a simple rubber strip that says nike air max

Use your instinct if you think its fake then dont bother buying :)

i hope this was useful :)