Pardon the multiple postings: I didn't phrase my question clearly the first time!

Serious sticker shock at Lowe's this week, looking at their semi-custom vanities. I'm guessing I can do better pricewise with a sideboard or dresser, converted to a vanity.

But various posters here have suggested that solid wood is not the best material in a bathroom that gets real use (ie, my kids' main bathroom -- not a guest bath or a powder room).

Those of you who've converted antique furniture to bathroom vanities, any regrets? any problems with finishes/lacquers, or with drawers or doors swelling shut when the humidity gets high? Any advice?

Thanks in advance!