Old Sarum did put G-DRAG up for sale, but it would seem it did not sell.
My understanding is/was that one of the share holders wanted to sell. I think that OFSC decided to buy his share. So in a sense it was snapped up. But realistically, a month or two on the market is not very long.
Regardless, it's interesting to hear the comments made here as I'd been told that the C150 T/D was not nice to fly (probably another repeated urban myth).
If that's the case, the other aircraft I use must be truly dreadful