Spinets according to the "how to buy a piano" website, are 38" tall and under, typically 36". If this piano is really one of those, even the best of them, a Baldwin Acrosonic, goes for about $100 in my area in good condition without tuning or setup. Spinets have a "drop action" which is inherently slower than a console.
If it is 39" tall to 43", it is a console piano for which you may be able to get $200-$300 in the US continent. That price is for one in great condition.
Wurlitzer was one of the premium second line brands, right up there with Baldwin or Sohmer. I have played a mid-seventies 44" example in a church and really liked it. The situation is complicated by the late 80's sale of the Wurlitzer name to a global corporation, that uses the brand name now to import third class pianos. I played a mid-nineties (1990) era Wurlitzer console at a student's house last fall, and the consistency of the action at low volume was bad. Store salesmen may use this sort ot legend to bad mouth the old American brands.