If you are looking for a solid used pair at a cheap price Binoculars are usually something that get donated to goodwill during a grandparents house clean out or something, and from what I saw in a quick search before this post here lots of brand names... they have an auction site like ebay except all the items come directly from the respective goodwill stores. I used to buy old retro game consoles from them and never had an issue.
https://shopgoodwill.com/home