The proEV team that uses Kokam's said that the cells cost between $1.70-1.88 per w/hr.
However... That was 4 years ago when they bought them. Regular RC lipo packs had about 4x the internal resistance and less capacity 4 years ago, and most were $3-5 per w/hr.
Now, times have changed. The Ri is so much lower, the pack they built would only be seeing about 1/4th of the heating they were dealing with under discharge, and RC LiPo can commonly be had for around $0.58 per w/hr now.
So... The market trend has cut RC lipo prices by about 80%. If Kokam's prices on cells followed this trend, they would be about $0.35-40 per w/hr, but Im sure that's just wishful thinking. I'm guessing they are at least under $1 per w/hr now days.
I'm liking the idea of a large format 40Ah safe 10c LiPo cell for E-bikes. 400amp ability, way way better energy density than LiFePO4, and the pack construction would sure be easy to just make a single string of cells.
Then the LiPo haters could quite fussing about how LiPo creates atom bomb blasts that level your whole city, and are the reason children starve in Africa.