There are at least three on car and classic. A 350i, a well sorted 350se and a well sorted 400se. That's not a bad choice for winter time. However, as summer approaches I'm sure there will be a lot more, but prices seem to be firming up as with all TVR's now.
Almost bought that SEAC myself 2 years ago from the then private owner...was about £22k then. As said though, 'most' cars are tucked up for the winter.. Springtime usually shakes a few more for sale.