A number of years back, Ilford packed the VC filters along with a package of paper, called them "Value Packs".
If I recall, they had two (2) different ones, one with the 3.5 filters, the other with the 6x6 filters.
The more recent "Value Packs" are now packed with rolls of film, but you may want to call around to various dealers and see if they still have some of these older ones lying around.
While the paper itself may be somewhat old, the filters are still good, and if the paper is indeed old, who knows, maybe you can get the dealer to reduce the price, so he/she can clear his inventory.
You have nothing to lose, make some calls