James is over so I spent $25 on ordering in Domino's pizza which will feed us all for today and then half of tomorrow. Bob was going to be frugal and go get it, to save us the $5 or whatever delivery charge, but that would have taken another 2 hours so I paid the delivery charge to get us fed. I do sometimes err on the side of feeding James. It bugs me to have him hungry.
I do have tinting prescription glasses - i.e. my daily glasses tint. That's what I wear for all seeing. So on one hand I paid "extra" so they tint. But I do think it's important to wear sunglasses when out in the sun, and as I have to wear prescription glasses, that's what I needed to tint.
I think it was money well spent to have my glasses able to block sunlight. Eyes are vital. UV radiation can cause cataracts (or exacerbate ones that are already developing).
If I didn't wear any glasses at all normally, I'd definitely wear sunglasses when outside. But that being said, I don't think I would pay $100 for them. I'd get something cheap but durable and functional.