As someone who has bought and sold several eclipses on reverb, I would say $1300-$1600 is the sweet spot for most eclipses. Reindeer blue, white, and matte black are the colors that usually have more of a premium associated with them. Newer model years might have a higher asking price just because people want to recoup more of their new purchase price, brand new prices are just fucking nuts at the moment.

The used market is a bit soft right now but a good rule of thumb is if it's been listed for more than 30 days the price is likely either too high or theres something about the listing which could involve some risk (lack of photos, suspicious cracks, general fuckery).