I don't own one of those, but I do own a Roland keyboard with their weighted piano action in it - an A80. This is just the keyboard and MIDI sections - it's a master MIDI keyboard.
And it is
HEAVY. Like, you only gig this thing if you have a roadie or want to develop some serious muscles. Now, you might be able to split one of those HP237's - and I'm sure that they are nice pianos - but you would need a hefty stand to put it on for gigging - the base it's presently sitting on doesn't look suitable at all. I think that you'd need a Quik-Loc double-brace stand, at least. Mine's on one of these:
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And if you want to do the split, I'd get somebody who's done this sort of thing before to do it, unless you are very practically-minded - this may not be quite as simple as you think, although I'm sure it's possible.
I have no idea at all what these pianos are worth - not a clue!