I've got one. A steel-string jumbo acoustic, similar to the big Gibson, Guild or Taylor jumbos. The six regular strings plus a low B. I bought it on eBay more or less on impulse.

It has no maker identification at all; I assume it was made by a private individual, but the workmanship is excellent as far as I can see. Top is solid spruce, back and sides rosewood, laminated, I assume. If it were all solid woods it would have cost more.

First $400 US plus shipping takes it, with a Gator lightweight rigid-foam and nylon case to fit. I have a baritone guitar (same tuning except no high E string, and the G string is F# instead, making it the same as a standard guitar with five more frets), and that's easier for me to adjust to.

Peter.