Probably if you got the cash to make them deal with you.
ASICMiner, Avalon, Bitfury, Bitmain, Spondoolies, and if your daring KNC
AM has no BE300s, potentially some old BE200 stock but it will be difficult to aquire.
Bitfury aren't selling their latest gen and don't have stock of previous.
Bitmain will entertain smaller developers (see BW's message above).
Spondoolies also does but is between generations.
KNC be KNC'ing.
Bitmain seems to be willing to deal even with relatively small quantities of chip sales. I don't know that they sell chips just to random consumers but they have been quite reasonable during our talks to get chips for a miner design. Avalon also, but it appears they ask for a higher price on less efficient chips. I haven't looked into spondoolies too much but I believe they do have some Rockerbox ASICs still, though no Hammers (their older, smaller chip).
I don't know of anyone else with chips for sale- at least, chips worth buying. It's possible there are a few BE200s left, I suppose, but ASICMiner appears to be mostly gone.
How many chips are you looking for, and for what purpose? I know the Wasp guys have some chip samples they might be willing to unload depending on what efficiency and quantity of chips you require.
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novak