Ive been using Cincinnati Tool Steel (cintool.com) for A2 for the last few years. I have gotten D2 from them once a few years go, so guessing they should still carry it. They have been great up until a goof up on some blanks I recently ordered - but every place makes mistakes at some point I guess - and its the first goof Ive had with them. Hoping it gets sorted out soon.
Im in CO, and they charge a flat 20.00 shipping (Fedex has been how its always came so far) - but Im not certain on the minimum required as my orders have always been 3k+ with them. But might be worth a call. Ive been dealing with Maggie there, and she has been very helpful. I have them do some secondary work to the blanks before they ship to save some additional processes and handling and have seemed to be pretty fair price wise.
Wade