Welcome to 2001. icemat was a fantastic mouse mat which everyone went crazy for, compared to everglide and metal mouse mats, they're great.
I did sell mine, but bought a nedis glass mouse mat for about £20 and it's almost the same size as razers offering.
Now I see the only real other product is the cheaper 'skypad' but that still rocks in at £80. In lieu of missing the icemat people resorted to using frosted glass kitchen cutting boards.
I've tried fabric mouse mats, they wear down quickly with any decent use. And the plastic types, such as those sold by steelseries with rgb are rubbish, also wear down quickly and don't even sell replacement inlays.
After the spat of desk sized mouse mats that mainly serve to soak up your crumbs and beverages it's good to see the glass come back, reducing the friction between mouse and movement. They are really great, maybe just not for the ridiculous price razer are asking. Look for alternatives and check amazon warehouse and aliexpress.