I don't remember the rules on this, so check those. However, if it is permitted, I'd suggest the more specifics you give the better. Some members post these extremely general questions about what pipe to buy, and you'd have to become a personal shopper to answer the question. So give all appropriate info on what you're looking for, brand or brands, shape, finish, stem shape, dimensions, weight, new/estate, filter specs if any, button preferences if any, preferred materials of bowl and stem, etc. etc. The responses should only have to reflect people who have that item, or something close, in hand. If someone happens to run across an appropriate option, they might send you a link, but only in passing. I know this sounds a little curmudgeonly, but some folks seem to be asking for others to do their shopping.
