Ive owned several Optimas in my time bought direct from when it was based in Ginlow Mill in Bolton. Some scopes used to come back off mail order by unsatisfied customers and some of these had slight mount marks and could not be sold as new while boxed etc and only a few days old. These could be had for a fraction of their new price if you knew the right people. This was also the system with their lovely thick padded gun slips (GC ?) . Some were brand new and had only been damaged (nicked) with knives when opened carelessly. Again, I was offered these at a fraction of their new price. Problem was when you went to the local gun club dozens of members had the same bags so you has to mark yours.
This was also the system with some airguns. FWB Sport and HW35 especially. I once owned a .22 'Sport with a spare .177 barrel bought for a fraction of the new cost.

Personally I favour the early Tasco FM & AG scopes over the Optima (Hakko) ones. [Im off now to hide in my gun room.]

ATB
Ian