Right now no one is selling Asics except AM.
You probably miss the selling of avalon asic chips that goes on at the moment. There are a good chunk of developers (see my sig-link) that want to create miners out of the chips. So practically there are miners to buy now besides asicminer miners.
I guess the number of developers will rise once the avalon reference design is fully open and some people will sell the parts to create this, will assemble it for others or pay companies to create the miners with the avalon chips.
Only saying...
I can add 4 more hd7790's = 1200Mh/s at a cost of 500 usd. Ship time 1 day setup time 1 hour. at today hashrates the payoff in 100 days. I am in a funny spot since I have so many pc's gpus in position working as I type. I used first gpu to buy 2 then 3 then 4 then 5. always sold my coins quick. No complaints I am ahead a few thousand usd. I have a lot of pc's and gpus. I have some asicminer stock. I don't hold coins I sell them. So when avalon had the first sale I did not have enough coins. BFL just built the chips showed photos and I ordered 1600 in gear from them. waste of time. SO I grabbed some asic miner stock.
I had a big gpu farm 15 Gh/s so I sold off a lot of hd7970's and replaced them with hd7790's why?
For a certain profit and under 36 hours to setup. Hd7790's are better if you have 3 or 4 card boards. I wanted to get some bfl gear as the price points were nice but that turned into a waste of time.
As much as I would like to get usb sticks. Not at at 2 btc for 300Mh/s or 220usd for 300mh/s
I can get 600 mh/s for 260 usd if I buy 2x hd7790's. Now after 4x hd7790's this is no longer true as I will not have any more slots to fill on my gpu setups.
I am a bit frustrated at asic pricing as I see them all a little overpriced they are more expensive then adding gpus. Or worse the well priced ones from bfl never get delivered.
I think I will run the gpu farms and just buy more asicminer stock. AS a developer or builder I get that you want a profit. As a miner so do I .
Now for me buying a usb stick at 1.25 BTC would make it money sound move. I think I will hoard some coins this week and buy sticks at an auction. OR buy more asicminer stock.