Normally $28-$39. Verified to be in-store NOT online
. My local store had 28 of them! Change location on link to see if it's in stock near you.
Arguably a better deal because it doesn't require costly proprietary butane cartridges but instead uses a propane/butane camping canister. Up to 90 hours of run-time from a 4 oz gas canister (approximately $5 each) vs 4 hours on a butane cartridge (approximately $3 each).
You can also find generic mats on eBay for cheap (ARS Mat 12)