I'm in a similar boat, and it annoys the shit out of my wife, and any family member that thinks I'm "just cheap" or a "budget shopper".

I'm a value shopper. I was happy with the McDouble when it was under $1, but not now that it is nearly $2. It isn't worth that, but the BK Double Cheeseburger IS worth it even for $1 more than the McDouble (at least in my location).

Same is true for almost everything I buy. A certain fabric I want in my button ups, or a stich type I want in my pants. I hyper inspect almost every item of clothing I'm even contemplating buying. Same with furniture, with tools, with appliances.

It is almost a compulsion. I cannot pay more for something than I think it is worth... unless I REAALLLLLY want it.