Call a local millworks shop. They can run any moulding you like at a per foot price. Here in Atlanta, I have found it is almost 1/2 the price to have a custom shop run it as opposed to ordering it through the big home improvement stores.
Are you looking for simple dimensional stock or millwork? Anyway, hardwood is so variable in quality from piece to piece nowadays that I'd want to see it and select dimensional pieces myself. If you put your location in your profile, maybe somebody close to you knows of a good place. Another good place for the question would be the Internet newsgroup rec.woodworking
Get prepared for sticker shock if you aren't already. Advantage Lumber is listing 4/4 flat sawn cherry at $5.60 a board foot right now. A less expensive wood with a similar look is alder but fewer places carry it.
Here in Louisiana we have several custom wood dryers that are very cheap in comparison to retailers. They can be a good source of excellent lumber. You would of course have to make your own trim out of it or have someone else do it.
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