https://whatsminer.net/

Legit Site,  have purchased from twice now.
1st time I was on pins and needles ordering just over 2 years ago (a new M20)
2nd Unit was a factory certified used unit with 6 month warranty M30S just a few weeks ago. Taking a change on the re-furbished
But there are now a few new units available. (none at the time I ordered).
They seem to keep having batches of the certified used for what its worth but they now have some new units in stock.
 I was super surprised to have the unit at my US doorstep (MN) in about 10 days from payment.