AT won't collect a penny of fresh money anymore.
If their miners will ever finish production and make 250MH without setting on fire, the won't even ROI the import tax.
So even if you paid in full it's smarter to write off your entire amount.
New people will also only buy a 250MH unit under a $1,000, so the current miners are completely worthless on the open market.
Will AT ever be successful, the have to desgin a new miner with aleast a 90% lower price per MH if it can be currently delivered, or 99% lower if it takes another 6 months and so on.
Also they will never sell any pre orders again...
I think the whole mining ponzi scheme is long over anyway.