In the US, I prefer walmart.com over Amazon for groceries because they do their usual price vetting, whereas you can end up paying three times the normal price for something on Amazon if you're not careful.

Their return window is 90 days versus Amazon’s 30 and they actually let you schedule the return pick-up date. Also, their Prime-competitor Walmart+ service[0] ($98/year) has no order minimums.

[0] https://www.walmart.com/plus

I have their Walmart Plus. If I'm buying a major brand item I go to Walmart. 0 chance of knockoffs. I get 2 day free shipping. And - if it's in stock locally, many times they deliver directly from the store and I get it next day (no option to tip...so no pressure there).

I use their store delivery option if I'm buying certain groceries or items I need ASAP. Yeah I need to tip - but I consider it me saving gas money/time.