Product was delivered quickly to my small town. These blades seem every bit as good as the Wilkinson Sword product which sadly I am no longer able to obtain locally. Like WS they are a bit thinner than you might be used to.* see edit below
I always stretched the life of the WS blades to the limit, as they were becoming nearly impossible to find at local stores. Typically they would last more than a month shaving every other day. The last 3 or 4 shaves were never comfortable. First Darby blade out of the pack has delivered 7 like new shaves and 6 comfortable shaves. Given the reasonable cost and that 100 blades should last me several years, I will be tossing blades the instant they reach that uncomfortable end of life stage.
EDIT: Next blade I used was Wilkinson Sword. It has already delivered 20 like new shaves compared to 7 from the Darby. I am still giving Darby 4 stars as it remains great value for the money, just not the same quality as WS.
NOTE: The number of shaves depends on a lot of things, those who skip the beard softening steps, should not expect their blades to last as long.