[nitrogen]

That probably comes down to location and competence+availability of staff. I've had basically equal results from the three different grocery stores I've ordered from in my current location, one of which is Walmart, one is a Kroger subsidiary, and one is a local higher-end chain. But when I was in SF, I had terrible results with Instacart, and resorted to shopping in person.

[Jakobeha]

Honestly I still wish I could shop in person, it's just too far :)

Not trying to be rude but maybe you didn't tip enough? The default tip is 5% but I usually do ~20%.

[nitrogen]

I usually tipped delivery services 15-20%, more if it was raining, but shouldn't tips be hidden and only given in aggregate? Also I wish a fair wage was just baked into the price and tipping went away.