As it turns out, having your product featured in a major motion picture doesn’t only pay off when the movie first heads to theaters, but it can reap promotional gold for years to come, if you play it right. To that end, Pepsi announced it’s offering a limited quantity of Pepsi Perfect on the day Marty McFly orders a Pepsi in Back to the Future: Part II — Oct. 21, 2015.

The collectible bottles will be filled with Pepsi made with real sugar, the company said in a press release, and will sell for $20.15 (get it?) per 16.9-oz bottle. But hey, it comes with a “special collectible case,” so there’s that. There will only be 6,500 available online to people in the U.S., which means fans will likely have to hover carefully over their computers/mobile devices for the moment the clock strikes midnight on that day.

Movie fans who are in New York for Comic Con on Oct. 8 can also score a bottle of Pepsi Perfect in a variety of ways, one of which involves dressing up like Marty (puffy red vest or BTTF:PII jacket, blue jeans, white high-top sneakers, watch — required) and being one of the first 200 fans at the Pepsi Perfect Booth.

“Fans have always been a little crazy about it,” Lou Arbetter, PepsiCo’s senior director of marketing, told USA Today about the scene in the movie where a Pepsi Perfect is delivered to Marty via a pneumatic tube, “and so we wanted to take advantage of the fact that Marty travelled to the future, to this month, and wanted to actually come out with the product.”

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