Really, that's easier than taking something back to a store and explaining/arguing.
Bring a QR code to any official Purolator (our fastest, most expensive courier) depot and they'll handle all of it. You don't even have to box it, just "bring the item" and scan the QR code. I already had it ready in the shipping carton with packing materials, I just hadn't closed the box yet, so I went upstairs and printed the QR code and brought it in just like that. It cost me nothing, and I even got my scrap sheet of paper back
Now, because this isn't an item that's in stock or will ever be again (not a popular unit) the only option was "refund to Visa". Curiously, no option for an Amazon store credit (which is what I'd have chosen, I need a new UPS for the other desk anyway). I'll bet they changed that, because they get their merchant fees back that way or something.
I would anticipate that Amazon just ships things back for credit and because they have clout, it'll just end up back at Antec (or if there's a third party involved maybe reconditioning to sell to some other chump)
That was not a very good PSU, I don't feel dishonest about returning it. It "works", but precision matters more now with modern hardware. I think that unit is defective by design, at the very least.
P.S. I once had a job processing vacuum/extractor/carpet sweeper unit returns. Bissell had a plant in our town and that was my first job there.
The units would come back so full of dirt that they couldn't work anymore. Obviously the customer used the shit out of them and they worked. So I was denying those returns, "used, pans dirty, damaged by customer" etc. Suddenly, the CEO of the Canadian division in the Niagara Falls office called to talk to $8/hour me and gave me shit. You don't ever deny a return from these big box retailers. Boy... that was a lesson. I thought I was doing my job. Any job I take I try to do the best I can. I actually liked that job, because I also reconditioned units. Some of them could be sold as "seconds" and others we sold at company yard sales (and we used the money for an employee fund). I also made a few genetic monstrosities from parts that were pretty cool
)