Ooh, lying seller is a liar.
Third link the keyboards are clearly not USB (see picture lol) but are marked as such in at least two places. I suppose anyone buying these will know better though.
Also, doubleshots look much much more clear as the contrast between the black key and white letters(or other way around) is much greater than that of lasered or otherwise keys
And yeah, third auction looks like mostly doubleshots using Soarer's method, great deal if it doesn't go up a whole lot with time(which it probably won't lol, everyone hates MY switches but me)
Unfortunately, the modifiers are single space instead of 1.5 space size, so they won't really look right on a 'standard' keyboard.