As Nick says, Invaluable have increased their commission, not Vectis.
I believe this time round we're to be treated to the Meccano collection, a good amount of Palitoys and some 2D preproduction stuff. As I understand it these are all from collections rather than a discovery. All great stuff but you can't beat "new" items coming onto the market. That said, I shouldn't think it easy to build a Meccano collection overnight so their may be previously unseen items. I'm sure the decision to sell was in no way influenced by the insane price achieved for that Boba Fett last time!