Casio SK Series Keyboards

I'm putting this together as a (somewhat kinda) definitive resource for the ultra-cheesy yet super-cool series of Casio Sampling toy keyboards.

- Rarity is based on observations of Ebay auctions and how often these show up for sale.
- Keyboards sell for significantly more if they include the manual, power supply, and original box.
- Keyboards sell for somewhat less if they are missing battery covers, have loose/broken keys, etc.
   Common = These are extremely easy to find.
   Uncommon = These are a bit harder to find, but there are usually 1 or 2 on Ebay at any one time.
   Rare = These are difficult to find, appearing on Ebay once every month or so.
   Extremely Rare = These are nearly impossible to find, even on Ebay, once or twice a year. Most are in the hands of collectors.

NOTE: I have the manuals for most of the Casio sampling keyboards available for download below. If you are looking for OTHER keyboard manuals, some of them can be found at this site: http://manuals.fdiskc.com/flat/

Pic	Model	Rarity	Downloads
	Casio SK-1	Common	Manual Service Manual
	Casio SK-2	Rare
	Casio SK-5	Common	Manual Service Manual
	Casio SK-8	Uncommon	Manual Service Manual
	Casio SK-8A	Extremely Rare	Service Manual
	Casio SK-10	Rare	Manual
	Casio SK-60	Rare	Manual
	Casio SK-100	Rare	Manual
	Casio SK-200	Rare
	Casio SK-2100	Extremely Rare	Manual
	Casio EP-30	Extremely Rare
	Casio DM-100	Extremely Rare	Manual
	Casio PT-280	Extremely Rare
	Realistic Concertmate 500	Common	Manual Service Manual
	Realistic Concertmate 650	Rare	Manual Service Manual
	Realistic Concertmate 800	Extremely Rare	Manual Service Manual
	Yamaha VSS-30	Uncommon	Manual
	Yamaha VSS-100	Extremely Rare	Manual
	Yamaha VSS-200	Extremely Rare	Manual