Are the people who sell refurbished MacBook pros on eBay reputable? They advertise a 3 year warranty, and upgrades. Here is one listing, for instance: https://m.ebay.com/itm/MacBook-Pro-...Y-Core-i7-2-0-16GB-1TB-OSX-2017-/172978991490 I can’t really afford a brand new one. I’m a teacher, so I think I could also get a discount from Apple, if I go that route. Thank you!