Glass bed which one and where?

Hello recently I purchased this.

Prusa Reprap i3

Does anyone know where I can purchase a glass bed for it? Or what size? I measure the bed is like 8.5 by 8.5 but I can't seem to find anything on amazon with the correct sizing.

If you have bought glass for this what did you buy?

I really want to flip the bed so its not aluminum and you can see the hot surface warning. Plus glass will offer a smoother surface to print on.

Thanks

A high street glass shop or picture framers will cut glass to size and it isn't expensive.

---

[www.hydraraptor.blogspot.com]

Why do you post everything double?