Honestly, Amazon still makes this way harder than it needs to be. The issue is that Amazon ties your shopping cart directly to your specific session ID and browser cookies, which are encrypted for security. There is no native database link you can just generate to share a live cart, which is super annoying. I would suggest looking at a browser extension like Share-A-Cart. I have used it a few times for group buys. Basically, it parses the DOM of your cart page, bundles the ASINs (Amazon Standard Identification Numbers) and quantities into a custom code, and then reconstructs the cart on your cousin's end. But you need to be careful here. Make sure to only use reputable extensions, as some sketchy ones might scrape your personal data or session cookies. Also, keep in mind that if items go out of stock or prices change, which happens constantly on Amazon UK, the code might throw an error when your cousin tries to load it. If you want to play it safe without installing third-party tools, the Wishlist is still your best bet, even if it is acting up. I have noticed the quantity glitch usually happens when you try to change quantities directly in the list view. Try adding the items to the list first, then change the quantity after they are in the list, or just add the same item multiple times. It is clunky, but it works without risking your browser data.

Since Amazon restricts session sharing, you basically have to use a tool that reads your cart data to generate a custom landing page. There are browser extensions that do this, but they require permissions to read your page data which some people dont like. An easier way is using external web tools. Honestly, Cart to Link is a decent option for this. It basically converts your active cart items into a single, shareable link that your cousin can open and import. The technical drawback with these tools is they rely on scraping or URL formatting parameters, so if Amazon updates their site structure, they can occasionally break. But for a quick trip planning session, it works fine and beats copy-pasting ten different links. Just make sure he double-checks the quantities on his end when importing.

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In my experience planning group trips over the years, live cart tools can be hit or miss when prices suddenly jump right before checkout. I used to rely on cart sharing tools for camping gear, but half the time items went out of stock or price drops got missed while waiting for my mates to look over the cart. What worked best for us on our last budget trip:

• Created an Amazon Wish List dedicated strictly to the trip so we could track price fluctuations together before buying.
• Checked Amazon Warehouse for Used
• Very Good gear like lanterns and stoves, which shaved about 35% off our overall spending.
• Set up price alerts on the list items using price trackers to make sure we hit our sub-150 target. Tbh the wish list feature had a weird glitch a while back with quantities, but in my experience it has been rock solid lately and keeps everyone on the same page budget-wise.