I live in Italy, Amazon opened its Italian branch about 15 years ago. Initially it had a smaller catalog of products, with products sold almost entirely by Amazon. They were delivering packages in 3 days and the price was almost always much better than any other online or physical shop.

Over the years they largely improved the delivery time. Now if I am ordering a package before 4PM there is a high chance I will get it the next day in the morning. Prices however became higher and higher, at the point that for many products Amazon is not that convenient anymore: if you need home appliance (TV, dishwasher etc) other online or physical shops are now significantly cheaper. If you look sport equipment (e.g. climbing, mountain bike, hiking) the specialized shops are usually cheaper as long as you are OK to wait for longer delivery time and maybe combine 2 or more products to reduce the shipping costs.

I still find Amazon convenient during prime days and black Friday, and because of the large catalog with many alternatives and sometimes useful reviews (need a new shower head, a new mouse, a hole puncher, a tire for the bicycle...) but prices are not as good as they used to be. But if you need something in a hurry, the fact that you can order today and get it tomorrow is a big plus.