Just wanted to let you know that Aldi has some really nice Chef Mats for sale this week. They're 24" x 36" for $14.99. Don't know if they compare to Gel Pro, but they feel really nice to stand on in my kitchen and I definitely liked the price! : ) It's not something they carry all the time; this is one of those specials that they run.
Here is a link that might be useful: This week's Aldi Ad: Baking items are on page 4