Ouch! Try your local farm store or maybe eBay or Amazon
I have a BX2660 that I replaced the seat because with the FEL I had loaded tires and the ride was bone jarring. For about $90 on ebay, I bought a suspension seat that was not only as comfortable as the kubota OEM but also floated up and down when I hit a hole or bump. One of these came standard on my cheap Chinese tractor and for what the Kubota costs you would think that it would also come with it.
Where in the world did you get that price? I just looked the seat part number up on Kubota.com and checked the price on Messicks.com and they list it for $153.60WOW !!!
I got a price for an OEM seat Replacement.... $829.00 !!!!!
Unbelievable !