Because they have stopped making them. According to The New York Times OSU will now only sell jersey #1 and a jersey with the coinciding year from hear on out. Just so happens that 15 is Zeke and next year will be JTB's number 16 so I guess that's just a happy coincidence for us lol.

Here is the article:

http://www.nytimes.com/2015/08/06/sports/ncaafootball/days-of-selling-po...

*of course some here have been known to go overseas for their merchandise