grill mats

Hello, buddy: Recently I have a family BBQ party, I need to buy some grill mats from the Amazon, I found this product more with my requirements, http://amzn.to/2xEpkDD more importantly, it is the price is cheaper, 5pcs only $10.99, I need to buy 50pcs , So that it can save me a portion of the...

As a BBQ lovers, i need to buy some grill mats, should i buy at Amazon? http://amzn.to/2xEpkDD Or should I go to my local Wal-Mart to buy? Sorry, my home away from the nearest Wal-Mart need to drive 30 minutes, which is what I hate.