There are some retailers that sell jerseys cheap but you have to look. I bought an "authentic" Eli manning jersey on ebay for $30 (size 54 so not many people bid. Shipping, though, was $20). At the same time , I won another auction for another authentic Eli Manning jersey for $40. The $40 jersey was 100% authentic. I hav eno doubt. The $30 is heavyweight mesh, dopuble-ply shoulders, looks great, feels great (high quality jersey) but the RBK font on the On-Fiel tag is slightly off. So, I believe it is a counterfeit (a high quality counterfeit, but a counterfeit). If I had known it was counterfeit, I never would have bid. I confronted the seller about it being a fake and he said he had sold "hundreds of jersey" (his feedback showed he had) and I was the first person to ever question one. He then offered to refund my money (all except the $20 shipping) if I returned the jersey at my cost. I ended up keeping it. If I had returned it, I still would have been out of $20. I wear it and nobody else knows it is counterfeit becaus eof the quality. However, that seller (ebay name cavs300m) is scum for selling fake jerseys. I contacted Reebok. They said I could send it to them if I wanted for authentication but if it was fake, they would have to keep it.
BTW, I knew the other Eli jersey ($40) was 100% genuine. I sold it on ebay the week before the super bowl for $140 to a guy in NY. I could not and would not sell the counterfeit one because I knew it wasn't real an dthat could be my butt in legal trouble for selling a counterfeit jersey.