Bought a new 1600 W psu off Amazon for $40 cad
So usually during breaktime at work, I tend to go on pcpartpicker and put together a parts list for fun and casually browse for any deals. Around late April, I found that Amazon was selling an ASRock PG-1600G for $40 cad including tax. I went on the SPL psu tier list and found that this psu is rated tier A+, the best rated quality. I also saw that ever other sites selling the same psu listed them around $350-400 cad, making me think that the seller screwed up and forgot to add the extra digit when listing the price. I then quickly bought the psu even though I don't need it and 1600 W is overkill for me.
But after 2 hours, I started to get second thoughts on the purchase because this psu seemed like too good to be true for it to be dirt cheap, and I discovered that the seller's review isn't the best - rated like 3.5 stars and the most recent reviews complained that the seller refused to provide refunds and damaged their products. I decided then to request for a refund but Amazon didn't grant me the usual automatic refund for products not shipped yet. Instead Amazon made the request to the seller to cancel the order. The seller however proceeded to ship the psu instead.
Once the psu arrived, I opened it to discover an actual psu and not like some rocks or something. I inspected the psu and the cables for a bit and it actually looks like a genuine ASRock PG-1600G. Other than the fact that the packaging seemed weird where the bag of cables almost busted out of box as soon as I removed the plastic wrapping, nothing else looks weird on the surface.
I want to ask if there's any other steps I can take to verify if this psu is a genuine model, hopefully without gambling my pc by hooking it up and stress testing it.
If I end up verifying that this is an actual ASRock PG-1600G, then deciding what to do with it would be another discussion.