I have tried, and failed, to think of a reason that a fretless should cost $100 more than fretted.
I've wondered about this myself, but just now reading your post something came to me that might be the answer, might be...
A fretless board has to be impeccably planed for all the points on the fingerboard to ring out true.
A fretted board doesn't need as much detailed attention to the board itself as a lot of that refinement is addressed to dressing the frets.
Maybe it takes more effort/hours to dress the fretless board perfectly than it does to dress frets. Certainly from a square-millimetre perspective there is more area to be dressed on fretless than frets.
Maybe, perhaps? I don't know. I'm not a luthier, just taking a blindfolded random shot in a dark room, and probably shootin' blanks...
Being snippy to people trying to help is probably not the best way to get useful feedback.
You may ask the question but you don't get to control the responses.
Agreed!
You have made similar comments in other threads where I thought the OP was being snippy with respondents, and I commend you for sticking up for the respondents. Jeff Bonny
agreed with you regarding this matter as well, and I've never seen him offer anything other than generous advice in his posts just as he has done here, and he also made a valid point from an OP's perspective. So I don't understand why you say "don't get snippy", then turn around and got snippy with one of the people you were a moment earlier defending, to the point of threatening to put him on your ignore list.
You are trying to help people, Bonny is trying to help people. I'm trying to help people. The OP may have been a little snippy or may not have been a lot snippy depending on how you interpret the responses, but please don't be so quick to add people to your ignore list as you may just miss out on some useful info. Walk a mile in another man's moccasins...
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Finally on topic... vertical bass players: I was going to suggest Deleo from STP, but DiabolusInMusic beat me to it.
Also check out the
Moses "Vertical Jump" bass, which is intended to be played in either horizontal or vertical positions.