GreyEyedGhost

Yeah, but that isn’t a one-time cost, either. That’s a recurring cost, typically on a biannual basis, and usually much higher than the monthly subscription. That said, being able to walk out with something that is going to reliably work for the next couple years definitely has its benefits. Ive just never considered something with a definite lifespan and a requirement to replace as a one-time cost. Kind of like the difference between paying property taxes monthly or yearly - I’m still paying and it isn’t going to stop.

21 years with the same frames?

If you think glasses are a one-time cost, I feel like you’ve never worn glasses. I had 10 years in my life where my vision didn’t change, and now I need bifocals/progressives. Given the nature of the condition, I expect to have to get new prescriptions every 2 to 4 years until I die or go blind.

That said, the rest of your comment is quite likely painfully true, especially if Amazon has their fingers in it.