The original poster had a specific set of limitations:
- .28J/Gh chip
- .28J/Gh miner
That eliminates most of them to begin with - if not on the first one (though honestly most developers have only recently been posting fudged numbers on efficiency) then almost certainly on the second one.

But yes, Spondoolies-Tech is out of stock and seems to be in the process of changing their business model - see also the bitcoin shop 'letter of intent' to merge with them.

On the up side, there's other companies trying to fill the void - SFARDS has a new chip coming out, LK Group is planning one, Lightning ASIC may or may not be planning one, 21 Inc may be announcing things, etc.  Unfortunately though, the climate is very much heading towards further consolidation (seem my ranty rant post on that subject), and except for SFARDS none of them have made any positive statements with regard to small scale mining.