again i'm going to post this . . .
price of miner = usd 419 (as of 292 usd/btc @ BMT)
shipping = usd 50

(depending on location)
tax = usd 50

(depending on location)
psu = usd 50

(depending on user)
other additional costs such as upgraded/additional fans, lan cable, port switches, rental/hosting, racks/space, etc
so at bare minimum a s5 would cost usd 469 EXCLUDING tax & psu if applicable
@ current diff & price of btc @ usd 292.2/btc hashing @ advertised 1155ghs = 3.579/day * 12.8 days = usd 45.8 and so on with diff changes.
* btw, buyers WILL definitely mine @ a higher difficulty, note the shipping dates, soonest is a little over 2 weeks away & by the time it reaches buyer so lets say 3 weeks & i wont even bring up the june batch.
that is again EXCLUDING electricity costs & diff jump in the next 12.8 days or so.
if price & diff remains constant ( GL to that) it'll take at least 6 months to ROI ? in 6 months time i am very confident next gen miners will be available to the market & these overpriced s5's can be listed on the scrap metal list pretty soon.
if the buying stops the killing stops. i'd also advise miners to pull out from antpool to even out the overall network hashrate. needless to mention the p2pool that was not a real p2pool. less support = more pressure.
imo, BMT wants to clear it's stocks & taking an opportunity to make as much $ as possible within the shortest amount of time since SPT has stopped SP20 production & want to promote hashnest sales as much as possible or pressure buyers to buy the older stocks so that they can clear old stocks before next gen miners comes out ?
forget about what BMT is giving or doing anything for the community or making any profits or not, they (same goes to all manufacturer's, miners & traders) are all out to make $, $ talks & the BS can go walking !
just my very own opinion though. take it with a grain of salt or as an adivse. nothing against nobody. no one can stop buyers from buying or stopping BMT to raise their prices as every party has their own rights to do so but do it wisely.