Some guy in China was pulling them off new keyboards and selling them in China on some Chinese auction site.
Majestouch (Elitekeyboards) isn't interested in buying a bulk order from Signature Plastics and reselling it appears.
Numerous others (Fentek and other members here individually) have approached Cherry Corp and been thoroughly stonewalled.
Answer is no, not really.
I like NIB keyboards so rarely have the problem.
If I do I generally just throw them in a bucket of Simple Green. Rinse. Dry.
You especially want to be careful with vintage black/grey keys. They can get plastic white "blooming" if you expose them to heat or strong chemicals. Simple Green leaves them a little greasy and avoids that.
I've had good luck with the denture cleaning tablet trick...but I've only done Model M keycaps in it. Might be messy for Alps or Cherry for example where there's a small hole the solution could accumulate in.
Well.....as long as you don't mind zinc poisoning.
Jk. But Simple Green is quite safe. You can even use it to clean your horse. (http://www.simplegreen.com/solutions_cleaning_tips.php?sid=&action=artikel&cat=15&id=147&artlang=en&highlight=horses&application=Horses%20and%20Horse%20Stalls)
I've cleaned key caps on over a dozen keyboards last month using this ultrasonic cleaner (done 3 just yesterday):
http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=95563 (http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=95563)
Also shopvac and bristle brush work well for cleaning switches mounting plate, followed up with some q-tips.
Rip recommends Green Magic so I'll probably pick up some.
It's "Simple Green." "Green Magic" in your posession might land you 10-15 up north depending on how much you have. If you don't get caught, you could have some fun, though.
Where's my head this morning??
I have a large ultrasonic unit at my office and that's what I used for the keys on an absolutely filthy keyboard. I dropped in a denture cleaner tablet since I have those. And I tried windex. What solution have you found to be effective/safe?
I used compressed air and Q-tips to clean the rest of the board. Rip recommends Green Magic so I'll probably pick up some.
Your fingers will be dried out when you're done, but that's ok, you're a man and men don't care.
I'm thinking a mix of hydrogen peroxide, bleach, fixodent, cider vinegar, retrobrite, Simple Green, dish soap, soft scrub and a dash of MEK (http://en.wikipedia.org/wiki/Butanone), just to to safe, then inserting a sonic homogenizer (http://www.omni-inc.com/omni-sonic-ruptor-400-ultrasonic-homogenizer-p-45.html?zenid=bd6e11b2cdb8977374300e3e075fc04d) and exposing it to 254nm uv for a few hours.
Whatta think? Whitest keycaps evah?
Have you really tried the RetrObrite?
I did a quick test on my not that yellow NeXT and it got brighter. Before pic in the mod post.Show Image(http://geekhack.org/attachment.php?attachmentid=8249&stc=1&d=1268154806)