Does anyone know where I can find older BB models, such as the 7250? I have managers who refuse to use the newer versions and want to replace their rundown old models with new "old models".

best bet would be ebay

I doubt you'd be able to buy new 7250 models these days. The best you could hope for is refurbs, but even then I wouldn't hold much hope.

I can see where your boss is coming from though - older BBs do a fine job and you can pick them up for peanuts. I got my 7290 from Ebay for £22 incl shipping.

I do not know where. My thought would be to find a company that wants to unload the devices that they purchased previously. (Craig's List) ???

I have a few new 7250s in stock. Let me know how many you need and I will put together some pricing for you.