For 4 it's always a better value proposition to get from eBay, when cost with shipping is all accounted. And you'd be surprised about 3, e.g. check out the standing desks.
I posit that we're sliding back to the 1990's Amazon: only good for books. But it doesn't matter because they are interested in being a Google with customer service and making a profit that way.
I was looking for a copy of "Just So Stories" by Rudyard Kipling. Knew I wasn't going to get anything like the original publication of a 115 year old book, but the counterfeiter exceeded my expectations and sent me a badly photocopied, horribly cropped, freshly printed, piece of crap.
I posit that we're sliding back to the 1990's Amazon: only good for books. But it doesn't matter because they are interested in being a Google with customer service and making a profit that way.