Not good quilty products on it. Review on Ebay

I am purchase many items from this website as like pen drive , mobile covers mobile bumper and mobile phone but I feel every thing is very low quilty products and I feel these products not new some days ago I show a offer on ebay that a pendrive of 16 gb at rs 79 so I m book this and buy after delivery when I use this pen drive then I feel speed is very slow of this pendrive but at this price this is good so I am again ready toh buying anything on ebay so I am purchase 2 memory cards from this website of 32 gb at rs 250 each these memory cards 10 class and after 2 days memory cards delivered to me at my adress but when I am try to use these card they are not work both cards are damaged and not able to start so I complain on ebay care they tell me that plz resend to ebay and we send u again new cards but if I am send these cards to ebay then I pay rs 100 to 200 again so I am not sent these cards and I feel lose so I don't like this website beacuse many time I am purchase many items but in every item not good and not perfect