A123 Systems may still be in their "quiet period" while preparing to complete their initial public offering. Although I have to admit that I've not kept up on this subject lately. It is very unlikely they will sell any amount of M1 cells to a new customer during this quiet time.
My last purchase, made 18 months ago, required a minimum number of 4800 piece pallets. Seriously. The pricing was good. A signed NDA with them as part of the agreement prohibits me from disclosing prices. And I cannot remarket individual loose cells, or use them in hand tools. Historically, this is a common practice for them.
If you get beyond the front door, expect to provide your credentials, along with details on your application. Further, you may be required to submit your cell/module management design for review by their apps dept.
A123 Systems wants to be assured you know what you are doing, and they have no interest in selling to an integrator who may damage the product or themselves in working with it.
