Amazon has the 50 sq. ft. Reynolds Wrap Heavy Strength Aluminum Tin Foil for $4.48 - 20% off coupon (check "Save an extra" box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (can cancel at any time)= $3.36 with free shipping on $35+ or with Prime. Heavy duty aluminum foil stands up to the demands of extra-high heat.