take the money you pay yearly for prime, and set it into a "shipping budget"
each time you need to buy something online, find it on the manufacturer's site or some other direct distributor, pay the shipping costs, and deduct that cost from the 'shipping fund' if the item is actually available on amazon (not a knockoff or replacement)
I quit prime many years ago (streaming experience was awful even before netflix was the only real alternative)
I still get free shipping. and other stores offer worse service at higher prices, if they even have the needed item. I wish it weren't so, as everytime I order I feel like I just went down on Bezos.
for electronics I am happy there is a solution like geizhals.at (aka skinflint.co.uk), allthough even that often just leads back to ordering from amazon
For my part, my "it's so convenient" was comparing to online shopping c. 2003. These days, I can order from a lot of other online stores for the same price with the same delivery time - sometimes better.
