I've bought online from probably two dozen major retailers. Where to go depends on selection, price, availability and risk. On the other hand, I don't buy from small unknown vendors, either on their own site or via third-party aggregation.
I don't buy from small sketchy local stores either.
I try to buy directly from manufacturers, or Target or Costco. But Amazon lost the business my family used to give them. I’d go with Walmart before Amazon too.
Target same day pickup is good. Not a Costco member, so have only used the pharmacy.
Bought a microwave from Walmart that came in a severely damaged carton, although there were no dents or scratches. But the microwave died a few months later. Never again.
Besides, Walmart was a huge factor in killing the downtowns of many small and medium sized towns and cities.
I don't buy from small sketchy local stores either.