Dont Bid untill the last 30 second, put down your max bid the last 30 second. It will reduce the chance of people using another account to outbid you, or pull up your maxbid
When you buying something like shoes, when you see the seller is from China , just dont bid it, 90% are Fake, when bidding Hat(Von Dutch) or Clothing(Burberry), check carefully for detail. A lot of fake stuff flooding in Ebay.
Power Sellers sometime are also selling fake stuff, when rating is below 97% check for the negative feedback, if someone mention Fake or Imiation in their negative feedback, you better watch out...