Comment Re:"very hard not to shop at Amazon" (Score 1) 85
I think the question was not Amazon vs Walmart but Amazon vs other online shops that also deliver to your doorstep, and do not cost you much more time.
That's still a lot more effort, especially since you have to vet each one to figure out if they provide good customer service in the event something goes wrong, and to be confident they won't steal and sell your credit card number (yeah, you aren't liable for the fraud, but getting a new card is a huge PITA). What could make this work well is the existence of a few online shopping aggregators that combine searching across all of the online stores and centralize payment. The problem is that in order to compete with Amazon any such alternatives would have to have enormous scale, which makes it a very difficult space to enter. Google tried with Google Shopping, but regulators immediately jumped in to stop them.
FWIW, my strategy is that for inexpensive stuff I just buy on Amazon, period, spending a little time to look for cheaper/better options than the "Amazon recommended". For pricier stuff, where it's worth spending a few minutes, I search on Amazon and also on Google, and if I find cheaper non-Amazon options I spend some time evaluating the different sites, unless they happen to be sites I've already bought from. For really expensive stuff I use other search engines and recommendation sites... and then almost always end up buying on Amazon because on those products pricing tends to be consistent, and it's a lot of money and if something goes wrong I trust Amazon to make me whole