Good Price for a Tier S+ PSU as per Linus Tech Tips PSU Tier List,
This is one of the best power supplies on the market today, ripple lower than 10mv and 80+ Titanium. 10 year warranty.
Amazon Historic low price and can't find it any cheaper on Staticice and even then the sellers on there are charging shipping.
For the miners you can link two of them together with the provided link cable for 2000w total.
In stock at the time of posting and will go on backorder if I am not mistaken from looking at the listing.
Usually dispatched within 1 to 2 months.