We use Atlantic Biologicals for any secondary wholesale needs and are very happy with their service. I've gotten 1000ml evac containers from them in the past but I don't know if they have any right now. Drop me an e-mail if you'd like further information!
Thanks for your input...I found out today that BBraun has evac bottles and we can order these at even less cost than Hospira, so I think our problem is solved.