5.45x39 has pretty much dried up everywhere. A shipment of surplus 5.45 just came in a couple weeks ago and the only 2 distributers that were able to get any of the latest batch is Ammoman and Aim Surplus (both online distributers/retailers). Ammoman is now selling them at $200 a can. Aim Surplus is cool enough to not gouge people on the surplus ammo (yet), but still had to raise the prices about $25 higher to $165 a tin.
Only one importer was able to ship the latest crates in and resulted in higher prices. If you really want surplus 5.45, I suggest you buy the last batch Aim Surplus was able to get in at $165 a tin. The days of $110 cans of 5.45 are long gone and I expect $200 cans of 5.45 to soon be the norm.
J and G sales always has it advertised. i just got one of their mags in the mail today. though i dont know how good the price is. ive never really compared them to anyone else about it. but their prices dont seem too bad to me