On Thursday, Murphy was standing in Northampton’s most popular line: the two-hour queue to get into one of the only three recreational marijuana stores on the East Coast, New England Treatment Access, or NETA.

“Want my spot?” read the sign hanging from his shoulders. “Just $20.”

It was day five of Murphy’s well-planned endeavor — complete with business cards made of cardboard and tape — and he said he had already made 15 sales, ranging from $5 to $20. And with the holidays approaching, Murphy’s business plan is likely to get more lucrative as last-minute shoppers pull up to the lines that continue to snake around NETA’s parking lot weeks after the store opened.

“The closer I get, the more it is,” he said, showing how he can easily adjust the price on the front of his sign as he moves forward in the line.

Murphy said he has had a wide variety of customers: the elderly, those with disabilities, out-of-state visitors and people in a rush.