I did q topic ...Awning mats in the General RVing issues and talked about the mat we bought.
The thing is a lot of CG are only letting you use a mat that does not damage the grass underneath.
We spent around $160 Canadian and well worth it.
Just my opinion but those mats that have the large weave tend do tear/ fray easily. We have had them as well as on our deck.
The other issue is that they are not grass friendly, IMO
I realize a lot are sold, usually under $50. Maybe the price is what dictates the sales.