There are three reasons for this. First, as mentioned, there is often no adult in the room, and ignorant sellers selling to unsophisticated buyers is always dangerous. Forgeries are common, and quality is often exaggerated. Second, there is no warranty. The seller is not there tomorrow, and the buyer has no recourse for forged or overpriced stamps. And third, “estate sales” are often shams, with poor value goods brought in to dupe sellers in a staged environment. If this sounds like the party line for getting people to buy their stamps from mainstream knowledgeable dealers like us, it is. But it also is true. Sure, people have gotten great deals at estate sales. But more often they’ve been fooled. Collectors who never try to get the great deal find that a good, fair deal is usually the best deal of all.