i have been shopping around for a K61 the last couple of weeks and found these....ProAudioStar has Kronos 61 B-stock with Korg factory-installed extra hard drive (SSD) and RAM for 1799/ offer. it can be had for 1700 or less

that's with a one-year Korg warranty, free shipping, and no tax. with the expansions, it's pretty much like the Kronos X, right? this is the one i just ordered.
i also looked at this.... Kronos 73, 1699.00 plus shipping at Music Go Round
Cockeysville MD. includes Korg hard shell case ! cases alone go for around 200.00 on eBay. Chris at MGR quoted 80.00 shipping to me, which is not bad considering the weight of the keyboard plus the case.
i don't know, maybe the 1699 could be even knocked down a bit. MGR does not charge tax.
i wanted a synth action board (use Triton Extreme now) as opposed to the 73's hammer action, otherwise, i would have jumped all over this.
hope this is helpful to someone.