Residents tend to be reasonably well clustered in terms of socioeconomic factors, and we know that at least one resident exists for whom this is a reasonable purchase.

If we assume the 3x10^6 sales are all US (false, but good to some order) and estimate the US population at 300x10^6, then the expectation is roughly 1:100 that a random person will order a unit. Conditioning that on socioeconomic factors should yield a reasonably high probability that if you ordered one, so did several of your neighbors.