I didn't state that all Ebay sellers were scalpers, only that some of them are and, unfortunately, they seem to be the top of the pile. I have bought some very good Hornby Maunsells off Ebay before now, and the Hornby Southern Suburban train pack (which was sold as new, but the loco was damaged, ne'vermind).
But the Southern Suburban coach pack, which originally retailed for less than £75, is now going for ca. £175. Yikes! I guess that apologists (not a comment aimed at you!) might say something along the lines of "fetching its worth", and good luck to them.