Flex Seal at Amazon
Consumer Report
Ordered one can @ $19.99 plus Shipping $9.95.=$29.94 Get one can free / only pay shipping (supposed to be $9.95=$39.89. They charged $19.99 for the first can, then $9.95 to PROCESS the second can, then charged $17.90 shipping = $47.84. The crooks screwed me out of $7.95. I may be dumb, but I am not ...