Minivan vs Standard Van (7 pass vs 8 pass) Bait n Switch

Usually go national route because most my rentals are airport but needed to pick one up locally... When we go to book there's 7 passenger and 8 passenger Vans listed. Price for the week was about $50 less for 7 passenger. 7 passenger is listed as Chrysler Pacifica or similar and labeled minivan. Other one is called "Standard Van".

Anyway long story short before I head out and I call them and tell them that I'm on my way and what vehicle they have for me and they tell me Pacifica... I tell them I don't have a problem with Pacifica as long as it's a 8 seater. They say they weren't able to get a 8 seater so they got a 7 seater instead. I tell them it's listed different on the website and there's also a price difference. She says that's all they have but they also won't adust the price down because it's "always the same price" 🙄

I understand holidays and availability can vary but based on reading comments here as well it seems mostly they easily interchange the 7 passenger and 8 passenger Vans even though they have seperate listings... If they are considered one category when it comes to distribution then why even list them seperately 🙄