Prices for his “products” will change over time and with demand, according to a complicated set of rules. In standard gallery pricing, the cost of “multiples” like prints and photographs typically escalates as the edition sells out.

But in this case, with edition sizes for each artwork ranging from three to 10, prices start at $15,000 (close to usual gallery fees for blue-chip collectors who seek first choice and possibly a monopoly on a particular product line). They drop over time to $60 (closer to the cost of a shopping trip to Oxxo) on the project’s final day, March 16.

“I see this as a game — a bizarre, playful game, with elements of Monopoly, chess, go and maybe backgammon,” said Mr. Orozco, whose unruly gray hair and nubby wool jacket give him a hip-professor look. On a break from installation in the “store,” where assistants were applying stickers to packages, Mr. Orozco was talking, pacing and smoking in the Kurimanzutto courtyard outside the official red-and-yellow Oxxo entrance sign, which has the graphic punch of the best Pop Art.

“It’s a way of collapsing in the same physical space two different systems — the art market, which is about exclusivity and high prices, and the market for everyday consumer goods with their mass availability and low prices,” he said. “I’m interested in the turbulence that creates.”