Hi Mark - decent lap steel guitars come up fairly regularly on this forum, or there's on-line auctions. If you want a new guitar I, and most others on here, would recommend you avoid one with an adjustable bridge (strat type). Steel guitars don't need them, a straightforward piece of angle metal is best; for various reasons including sustain. Try to get in touch with one of us for a visit to talk over what kind of music you want to make and, therefore, the best sort of guitar to go for (6 string or 8 string or . . etc.) - so let's know whereabouts you are.
Welcome aboard, Tony.

PS they are pretty easy to make too!!!