Even if it;s "brand new", it's 30-40 years old. Batteries are bad, seals should be replaced, wiring might have decaying insulation...
I've got a Tekna that was just rebuilt by Steve Gamble, brand new almost everything. Faster than most gavins, about as fast as an SS on 7. I'd part with it for $1100 and split shipping with you. (I'm looking to upgrade to a scooter with bigger batteries) You can find Teknas simlar to mine that have not been rebuilt like mine, but which are in running condition, for $500-$700. I bought mine for around that, and then re-did everything for several hundred dollars.
You won't find a new SS for $2k, but you can find older Gavins for $2k. A "real" scooter like a Tekna, Mako, SS, Gavin or X, will last longer and go faster and deeper than a SeaDoo, but do cost more.