I've always found the "time is money" hourly rate comparisons a bit contrived, because I can't actually trade my every waking hour for an hourly rate.
The reality for most people is that the trade-off is actually between time spent on looking for bargains, or time doing something else that doesn't make any money.
It really depends on whether you enjoy looking for bargains or not. If you don’t, then it feels like you are working, only you’re not getting paid.
Back when I was younger and earned minimum wage, whenever I thought about buying something I'd run the calculation of how many hours I would need to work to pay for it. That helped me save quite a bit.