While the Air Jordan 29 Low appears to have been retired, that doesn't mean there aren't more colorways out there that haven't seen the light of day.
Take this pair for example, an Air Jordan exclusive created for Oak Hill Academy, longtime recipient of special sneakers from Jordan Brand. The shoe's bright colorway matches the palette of the school and the tag inside confirms its status as a promo sample.
As is often the case with Jordans that never hit retail, the asking price for these is pretty high. The only pair floating around on eBay at the moment has a buy it now price listed just under $1,000.
See the auction for the shoes here.