I have been trawling through the items on ebay for a Boston Celtics shirts, I cannot believe the rubbish that some people are trying to peddle.
I think the basics to look for in the NFL shirts are the same for the NBA, bad quality materials, sewing, shiny shirts and the different fonts used for the numbers, and the list goes on. I think Adidas need to get on the top of this.

I am not in the market yet to buy one, I was just looking, and thought I would post on this website.