OK - this is the lowest price I've seen yet.
$615, shipped from the UK and I'm not sure if it includes shipping.
but let's say you wanted a little over 20 mh.
that's $615 x 4 = $2,460/22.4mh = $109/mh
that's incredible and only 560 watts
so - let's say you went with 5 of these: 5 x $615 = $3,075
watts: 700 watts for 28 mh
not a bad deal.
https://minereu.com/product/gridseed-blade-miner-80-chip-speical-promotion/ps: I don't work for or are associated with these guys though I have purchased from them and they've been great to work with.
I'm just sharing what I think looks like a great deal.