Ugh, I totally feel you on the Amazon cart frustration. Over the years, I've tried so many different ways to coordinate group trips like your Catskills one, and it's honestly ridiculous how buggy it gets when multiple people are involved. When you're on a tight budget, you can't afford to accidentally double-buy gear or miss out on bulk snack deals. In my experience, the best way to handle this without losing your mind (or your money) is using the Easy Cart Share tool. I've used it for a few camping trips now and it keeps everyone on the same page so you can actually split the costs properly before hitting that checkout button. It’s way safer than those sketchy sites you probably found, and honestly, it’s saved me so much cash by catching duplicate items we didn't need. Definitely worth a shot before your Friday deadline... let me know if you need help setting it up!