there are numerous websites online,depends what your looking for.zong is back in business and they sell quality.also roor*is a quality company as well.just a little expensive.and yes glass is better than wood or metal,the metal and wood burning also goes into your lungs along with the smoke and butane(or whatever fluid you use)which is no good.with glass you just get the smoke and butane
it depends where you from I found out Myrtle beaCH district area are not allowed to sell glass pipes even for licnese business..
good thing north myrtle beach is in different district.. but anyway it does depends where you are from.. I don't put up with online orders myself.. only cash and over the counter too..]
but believe or not.. flea markets is good local to buy glass pipes.. just watch out for thin glass pipes..