If an English pipe is more to your fancy:
A lovely GBD billiard for $80:
http://www.smokingpipes.com/pipes/estate/england/moreinfo.cfm?product_id=74125
A Sasieni billiard for $50 that has a lot of character:
http://www.smokingpipes.com/pipes/estate/england/moreinfo.cfm?product_id=87010
SmokingPipe.com estates are ready to smoke, they've been cleaned and sanitized. I generally run a cleaner with alcohol through the stem, but that is probably not necessary. You can get cheaper estate pipes on Ebay, but could get stuck with a stinker, because you just won't know what to look for or avoid. You can pretty much be assured, if using a board sponsor to buy an estate, you will get a good pipe and fair deal
If an estate pipe doesn't work for you, a new Stanwell, Savinelli or Peterson can be had in that price range.
Don't spend too much on your first pipe, your tastes will evolve fast.
Don't be afraid to run a choice across the board, you'll get some good, honest feedback.