I bought a seat of him a few months ago just for the guts..
I paid £30 (was buy it now £39 put offer in and got it)
He said he had a few seats for sale which at first didn't sell .
He has split the seats now just selling the guts and I think they are all gone..
He has a few seats only with no guts ... to be honest They are not to bad and very comfortable with the Kashi decal on the rear and look ok on my rider..
The guts are 90% same as original but not stamped and missing the lip at the top ( end stop )