The units from AKminer were listed as used.

I saw that AKminer was a verified seller an asicminervalue, but that's not the same as being trustworthy. 

But you're right.  Newbie's, like me, should definitely pay the money to buy from the manufacturer, or from bigger re-sellers. 

AKMiner might not send you what you paid for.

I bought 5 S17+ miners from them in December 2021, and was told twice that videos would be sent prior to shipping.  The videos were not sent, and in the end 4 of the five machines had problems.  4 hash boards are completely dead, and another 5 overheat enough that I don't feel comfortable running them until they've been repaired.  The machines had rusty fan covers (so humid operating), and hadn't even been dusted with an air compressor. 

So now i have one working machine for the price of five!

Going back to AKMiner and speaking with Joyson, he did have videos and sent them over finally claiming they didn't send the first time he tried, and four of the videos show machines with exhaust temps in the high 70C and low 80C. 

Joyson is prompt in his replies and polite, but will take no responsibility for sending faulty machines that I had no opportunity to see prior to shipping. 

He claims any problems must have happened during shipping, but the videos show that they had problems before shipping.

I would not recommend AKMiner.