They remind a bit of the platinum's but even more durable, and yes a little expensive though bought 10 blades for approx 6 euro overhere in BelgiumThey last a very long time and I recently noticed they improved the performance of my 53 and 57 Super Speeds tremendously. Always had trouble getting a 3 pass BBS with those Super Speeds, now I get there quite easily. For the last decade, I had settled on Lab Blues being my blade for all of my razors but these blades are just incredible. Pricey but I get over 30 shaves a blade with no tugs.