Nikes on footlocker.com

Hello guys. I am interested to buy some shoes on footlocker.com. Until now I have been buying shoes from my local retailer, but now he does not have what I need. So I was looking forward to find new retailer. Footlocker is one of them. I have question about quality of the shoes that they are selling. I heared a lot about footlocker. And the thing that really interests me is: are they selling fakes? 

PS: Also sorry for my English. Please let me know about my English writing quality below Thanks a lot. 

PPS: But my prior question is about footlocker