No.

I don't even trust myself to make purchase decisions >$100. I'm probably going to make a bad purchase decision >$100 tonight.

Probably involving a board game.

I feel like this is one of those things that people do for an experiment or headline but not in actual practice I'd be interested to see anyone who legitimately hands the keys over to their agents though

No not at all. I only use AI assistants for help with price comparison of things when I'm in the grocery store and want to know what of the salsas is the best price without preservatives or other things like that.