YOu can get silk tulle veils - they are about twice the price and really most people cannot tell the difference. The other thing is you can get organza or chiffon veils too - again these types of veils are not popular and so most shops may not keep them in stock.
As for the net - the more expensive the veil the better quality of the veil.
I sell lots of different makes of veils( all good quality) but the longer they are hung up they hang better and seem to become a bit softer ( if you know what I mean)
Goodluck hope you find what you are looking for