Dear Pack man,
Hi packman, well I have been in sport jersey business for a while. first thing first selling sport jersey you will get good margins specially when you sell it when the seasons come. People are Bidding the items like no tommorow. Its massive. one thing once the seasons end, It so quite. I have been selling NHL jersey at ebay also do wholesale to some big guys at ebay. Really Selling sport jersey you need to be in the right time. also if you can, Add value to the jersey such as autographs, Well I guess you will make almost 600 % profit. I used to chat With one guy selling Autograph Jersey who Bought $ 44 USD blank Jersey, crest them with name and number and let the players signed the jersey for 69 USD per Autograph, and sell it for 699 USD at ebay. Well Hope That will be helping you into sport Jersey business.
Cheers