What is an example of a good that has flexible prices?

Okay, so flexible prices, right? Ugh, don't even get me started on car rentals. Seriously, talk about flexible prices! One time I was looking at rentals for a weekend trip to see my sister. It was like, $20 a day one week, then BAM! $80 the next. Eighty bucks! What even is that?! It makes me so mad how much they change based on, like, everything. Is it a holiday weekend? Is it summer? Is it Tuesday? Who knows! It makes planning a trip such a headache because you can't ever really lock down a budget. You think you’ve got it figured out, and then wham! The price doubles. You just feel like you're getting ripped off, you know? It's like they’re playing some kind of game with you. And don't even think about trying to book in advance – sometimes that makes it worse. I swear, it’s designed to make you pull your hair out. So yeah, car rentals. Perfect, infuriating, real-world example of flexible pricing.