Everyone knows that Amazon has become the preeminent online retailer. When I first encountered them, they were mostly a book store. But now, their range of products is titanic. Often, they have the best prices, and have reasonable delivery rates. If you're into classical music, they offer quite a few massive collections at hilariously low prices. If I have any criticism of them, it's that they sometimes make it difficult to qualify for free shipping. The threshold is $25, which is not bad, but they craftily sell numerous items at $24.99 or a little less, which is irritating. As far as my own shopping is concerned, their nearest competitor is eBay. eBay sometimes has better prices than Amazon, and quite frequently free shipping is available for even small sales. They also provide important info about certain items, such as expiration dates for OTC meds. They even allow one to narrow sellers by geographic region. (In the past, this was unimportant, but since the Covid-19 problem emerged, shipping from Asia is problematic.) Interestingly, the protection plans eBay offered for electronic items seem to superior to Amazon's. The title indicates only two sellers, but I confess that when I'm ready to buy a new laptop, Best Buy's online store is where I'll go. Their prices are competitive, and their speed of delivery is impressive. But equally importantly, their site makes it easy to search for and identify those laptops that have precisely the specifications I'm interested in.