I live in the center of London and out of the 200 non-household goods orders I have on Amazon this year I don't think I would have been able to find even 20% of them in local stores.
Actually even when I do go in a store and find an item I need, I scan the barcode on the Amazon app and saw that it's usually a LOT cheaper on Amazon (like, 30% cheaper for the exact same tool).
Add to that what I mention in my previous comment about return policies, travel time, etc. and there's absolutely no reason not to order on Amazon, even if you're in the ideal place to go to local stores.