They still are for sale.Schick Injector blades for the PAL are no longer available on ebay.co.uk; anyone know of a source?
Do a google search.
Schick Injector Blades with Durable Chromium 7 blades per pack.
That should get you to e bay ref,seller Mr- Medical, who sells multiple packs.
PS Even works if you enter that description direct into the Bay.