Amazon '235 PEI' the base comes with the plate.

https://www.amazon.com/gp/product/B08PFHBR2D

https://www.amazon.com/gp/product/B09X53YHHD

https://www.amazon.com/gp/product/B0B3XK5NKH

I have this 2 sided that came with the base https://www.amazon.com/gp/product/B09YNN2Q15/

They're on Ali as well.

I have 2 different glass, G10, the stock PEI, and the double sided. I only use the double sided PEI, side depends on how much I need it to stick. The smooth side is insane but gives a gorgeous finish. The textured usually releases by the time the part cools.