Thanks, I do miss it but I settle very happily for a torquey A14 these days in my GB122.
I never kept track but I would take a conservative guess and say perhaps double what I sold it for plus a bit more. If I trawled through all my banking and found out I spent three times the sale price then I wouldn't be surprised. Very embarrassed but not surprised. I did rebuild it a few times as I did a bit of experimenting with it so there are costs in consumables to be considered in that price.