Originally Posted by MSD

Fun fact from a conversation with someone formerly involved with such things, so I can't cite a hard source, if you see a dollar store that never really gets any business and is in an area where they're unlikely to afford the rent on the amount of business they get, it's most likely a money laundering operation for organized crime. The biggest group that does this is the collection of Lebanese "mafia" families who move drugs (mostly ecstasy) into the US from the Middle East.