I was looking for tiny watch batteries, variously coded 377 and 626. By Googling I found a source in Australia that offered them at A$6.90 each; and two others that offered them at a mere A$2.90. But I ended up ordering six from Hong Kong for a total payment of A$5.94, including Australian sales tax (A$0.54) and postage (about A$1.35). They arrived and they work. Is this really the most efficient way to distribute consumer products?