Or perhaps this mob (online orders only)

http://www.polymerclay.com.au/kscc-krylon-crystal-clear-triplethick-glaze-express-p-11483.html

Bought 2 cans last week. Including postage, it cost $48 which I think is well worth it considering a dealer was selling them for $40 a while back !
On the left is the "original" TT that I bought over 10 years ago. I think I did around 8 full backglasses (including a Bally Bingo main glass and magic square glass).



So if you are lazy like me, just create an account on the website, place your order and wait for delivery ! Service was GREAT.