What a bunch of nonsense. You don't know how to figure out what BTC was valued at when you purchased the machine? IMO the more payment options, the better.
I am going to get on my soapbox for a sec... so prepare for a bit of suds
Hopefully they price it in BTC rather than some fiat denominated BTC.
First we are trying to promote an economy of buying things with BTC. This does put some risk on the manufacturer, but if we want the BTC economy to successful, we all need to take some risks. Miners are not averse to risks so we participate in pre-buys.
Machines that produce BTC should also be denominated in BTC. People who buy miners are buying to make more BTC. If the machine doesn't make more BTC than it costs... then it is clearly a bad investment. That is, the purchaser could have just purchased BTC outright and been ahead.
Pricing in USD or EUR or whatever, muddies the water on the calculation of ROI, but ultimately for miners, the calculation is easy in BTC:
(BTC in) > (BTC out) == bad deal, should have just bought BTC and held it
(BTC in) < (BTC out) == good deal, buy buy buy
From a practical perspective, if folks are worried about trying to get BTC lined up before sales become available, Hashfast can communicate before hand what the pricing will be by a week or so. Then buyers can get their ducks in a row. Avalon Batch 3 gave less than a day which prevented some from being able to participate in the sale.