Amazon isn’t as cheap as they used to be, but still competitive with places like Walmart and a far greater selection and stock. They’re definitely cheaper than locally owned places, I’ve tried to shop local, but the best I’ve seen is still like double what Amazon or Walmart has it for

Not always true. here Amazon is no longer competitive with the various DIY stores, from a price perspective, and often with other on line shops.

Also, I get the promised shipping time I’d say about 90% of the time even for same day items

Which is now, at least here, the only one selling point.