Luca from the italian forum has glasses from Makrolon for about 15Euro.
Shippment from Italy is rather expensive, so maybe it would be a good idea to organise a bulk buy
Peter Saturno from our german forum is selling glasses from milled and anodized alloy and Makrolon
Price is about 30Euro +
If i'm right he has just nothing left, but he is able to get made more.
ciao Joachim
edit.... 40Euro +++
better said 50Euro + with shipping costs