When I started shaving more than half a century ago, British-made razor blades were mostly better quality and more durable than many of today's. Pro-rata to my pay then, the cost of purchasing a pack of Wilkinson Sword blades was a bigger expense than now, but at least I could shave daily for at least seven days with one blade.
From limited experience, prewar blades were equally good and expensive, which is probably why so many inventive sharpeners were on offer. Things were also expected to be durable and capable of repair, resharpening etc. I used to have shoes repaired, suits likewise, shirt collars and cuffs turned, but it's almost impossible to find anyone providing such services today, in the UK.