Hi, I have bought a lot of Dong, while I suppose what is a lot to me may not be a lot to others but I have about 20 million Dong so that's alot of money to me, especially on something that's a very risky, long term and speculative investment in my mind. That said I've shopped with 3-4 of the Dong sellers on the net as well as a few ebay sellers.
Ocassionaly a great deal can be had on ebay, maybe someone bought dong years ago and got sick of sitting on it and is letting it go cheap. Overall though I find ebay prices to be high as ebay is hitting selles with 13% so figure an extra 13% on top of whatever profit the sellers hope to meet.
I was really kicking myself I bought a significant portion of my dong holdings from vietnamdong org at 98 per million which was the cheapest I had found online. Someone on DongTalk another message board more for dong than dinar messeged me adn told me to check out getdong com they usually sell at 80 but occasionally run sales as low as 70 per million. I bought from them, received my order quickly and am happy with my order, only downside is they won't allow you to specify certain notes, personally I like the 200k notes but they wont let you pick. I wound up getting an assortment of everything which is fine, I'll take a mix to save $23 per million.