It turns out the Nike LunarEpic Flyknit runner almost looked a bit different. A sample of the sneaker has surfaced on eBay featuring slight design changes that set it apart from the one that's available at retail now.

This take on the model has an outsole that is without the same laser-siped piston arrangement as the final one, along with a sole that is chunkier overall and intrudes on the upper more.

The LunarEpic Flyknit here has a nondescript black/white colorway that's not surprising as it's a wear-test pair not intended to be flashy.

Flyknit fans can add this rare shoe to their collection now but it won't be cheap–the asking price is $900 on eBay.

Nike LunarEpic Flyknit Sample

Nike LunarEpic Flyknit Sample Front

Nike LunarEpic Flyknit Sample Top

Nike LunarEpic Flyknit Sample Heel

Nike LunarEpic Flyknit Sample Detail

Nike LunarEpic Flyknit Sample Insole