http://industrialsavings.com/Merchant2/merchant.mvc?Screen=CTGY&Category_Code=warmingpacksCase Of 240 Pair HeatMax HotHands 2® Hand Warmers
Code:1100-10R_CASE
Price:$146.15
** Have you thought of using a (heavier) but much, much cheaper reuseable "fuel stick" hand warmer? I bought one for TransRockies at Sportsman's Warehouse, couldn't use it in the tent so took it back.. If I remember correctly, the fuel sticks work out to less than 10 cents per use... and you can cut them down to make many smaller, shorter duration sticks.
Or move to a more temperate climate... 60+ here today... ; )