JJay - 16-5-2017 at 06:39
I just ran across this on AliExpress:
https://www.aliexpress.com/store/product/Quartz-distilling-f...
It is only 125 mL, but this is by far the cheapest quartz distillation flask I have ever seen. They also offer for sale some other cheap quartz flasks
in sizes up to 250 mL and a cheap quartz beaker.