Donor compatability is the highest concern when it comes to a modern organ transplant. People are kept in the hospital for days and weeks, put on anti-rejection medication for months, and it still occurs, even when it apparently should not. Most bioware is Type O - 'universal donor' on the genetic level - and the rejection protocols are amazingly standard, so much so that rejection is functionally Not A Concern, because those gene lines are as bland as can be.
What you're suggesting takes you from Shadowrun ("Hey, I got an eye implant last week." "Yeah? How's it feel??" "Kinda itches." "You still good to go?" "Yeah, I can see fine.") back to modern-day protocols, where the implantee is still going to be in the hospital, they have to take both antibiotic and anti-rejection medications for months (because anti-rejection meds force the body to not produce antibiotics that'd attack the implanted organ), back to the body being at the stage where it might reject that genesculpted eye 'just because' despite the anti-rejection protocols - because the genetics in that implant aren't just 'not the same', they a) might not be the right blood type, and b) are genetically modified to do one thing particularly well - which means the base body's recognition of the stuff is skewed even worse towards 'invading biological'.
And that's the 'major rejection issues'. Some bioware, like some cyberware, can't be effectively transplanted. You can't take out someone's bone lacing (well, unless you're Magneto) and then just go and stick it into someone else; likewise, you can't strip out highly-specialized nerve clusters, or increased brain folds, or other portions of the neural system; just ain't gonna happen.
Though it sounds like a great plotline to have on the back-burner in case some player decides he wants to try getting 'used cultured bioware' -- get the discount, get the increase in impact, and then ... bad things start happening. Of course, in the case of a lot of bioware, the character is running a very real risk of death due to internal complications. Internal bleeding, cancerous growths ...
Aaaaall of that said, the answer remains, officially, 'no'. However you want to describe it, the official answer is 'no, you cannot get Cultured Bioware at the 'used' grade.