That's up to you - all I know is what's in the listing!
WY-30 don't seem to be very common, so no idea what they're worth. WY-60 might sell for £20 to 30, at a guess, but maybe they won't fly off the shelves at that price.
I will be making a converter for these, and they are nice, solidly built 'boards. Not NKRO though.
I've heard the keycaps have some value
