Check ableammo.com. If you order more than 10 boxes, they well sell it for a discount price and they were close to the price of 9mm luger as walmart.
Like someone mentioned in a previous post I am also selling quite a few 380 pistols, they are probably the most popular item with my customers. Ammo availability does not seem to be an issue with most buyers.
That is probably because a lot of people who buy handguns are not shooters. For some a 50 round box is enough to last a lifetime. Seven in the gun and 43 in the box. I for one am a shooter and the scarcity and price of .380 is an issue. Luckily there seems to be a good supply of .380 locally, though it is priced a little higher then I would like to see. Really no reason .380 should cost more then 9mm/.40S&W.