It's the price for one seat. Go to Seaeagle kayak site for further details on accessories. Definitely an improvement over the seats provided with the kayak. It does places you slightly higher out of the bottom of the kayak then the regular seats and provides slightly less stability however I personally find it worthwhile.
Thank you for your interest in Sea Eagle. We are not familiar enough with the Saturn Kaboat to be able to say definitively. However, the dimensions of the DKS seat are 14" wide x 21" deep x 19" tall. You sit 5" off the floor with 14" of back suuport. Hope this information helps.
The big difference is back support. This seat has straps that support that back which allows you to lean back more and rest. The regular seats have a back but I get a back ache very quickly in them. Sea Eagle frequently has "returns" on their web site at a bit of a discount compared to list.
Yes, they will. I have a sea eagle and a Sevylor Tahiti, and I use this seat in both boats.