Can I Beat Diablo 2 With Only Gear From Vendors?

Zarfen the Loot Goblin

Can you beat diablo 2 with only gear bought from charsi, gheed, and the other vendors of sanctuary? It didn't seem too bad at first, but the deeper I got into the game, the more obvious it got that the NPCs are selling some pretty crappy stuff in D2R. And to make things worse, I decided to go with a