How the reseller can offer lower price?
The price difference on the 30s++ 5800$ between whatsminer.net (cheap) vs microbt.com (official and expensive)
I could be wrong, but it's most likely because the price reflected on Microbt is the old price that hasn't been updated for some time. If you check microbt (which redirects to whatsminer.com) the miners are sold out, unlike in whatminer.net where they are still available
Just to give you the perspective of how the price can change. This is from the time lockdowns just started bitting hard.
Today 17 April 2020 MicroBT announces the fourth generation of their WhatsMiner Hardware.
M30S++:
- Hashing Power: 112 TH
- Power Consumption: 3472 W
- Efficiency: 31 J/T
- Price: 3899 $
M30S+:
- Hashing Power: 100 TH
- Power Consumption: 3400 W
- Efficiency: 34 J/T
- Price: 2740 $