Re:
I offer this constructively.
If the bike did not sell at £650 then fitting more parts and pushing the price up to £750 was always going to be a risky move
You also have to take on that Christmas is roughly only 8 weeks away so justifying a £750 spend on "another bike" to the Mrs at this time of the year is always going to be a tough ask.
Personally I like it and hope the right buyer steps forward, glws