http://www.ebay.com/itm/150856474335
$12.50 per tube beats any jeep vendor hands down. The valve stem is the proper TR15.
I ordered 2 for $35.50 delivered.
I didn't want to use my spare tire for a flat (it's diameter would be all wrong compared to the other 3 tires) so I swapped tubes... only to find out my spare had a patch
I still used the tube in the old tire... but I won't patch the old tube. $12.50 is cheap insurance for not getting a flat.