I purchased two cans of Flex Seal at the advertised price of $19.99 each. The special deal was you get an extra can free. I had intended to get 4 cans. When the shipment came, I found out that they charged me $29.95 for each "two-can" set for a total of $59.90 plus $9.95 "per can" shipping. That is $40.00 in shipping alone! My bill came to over $99 for the 4 cans. There goes another vendor that has a good product, but misleads people during the purchase process.