Nice and fast service
They also have TSR discount.Try this place Steve, also has a website Gemstone trading.
These hard to find top notch quality Gillette blades are made in Russia, and now available in the UK at a competitive price. The following sequence may be of use Remove link.www.ebay.co.uk
@Bogeyman how do the new Eastern European GP's compare against the Gillette Rubie? I remember trying the GP (like the one the OP linked) and a Rubie and they seemed quite similar, both very smooth blades.I heartily recommend you try the blue box/white letter Platinum blade version that is sold in Eastern Europe. The jury is out whether they are the same as in your photo as some say they are and some say they are a better and improved version. I have some and I wax & wane as to which they are. Regardless, they are one of the best blades extant and at minimum are the same superb blade.
At this level of quality I think any decision as to which blade is better is more dependent upon the soap used & the shaver's technique as they are so damned close in performance.