I Wear Your Shirt sells every day of the year for its calendar price: $1 to $365

In 2008, Jason Sadler was a web designer in Jacksonville, Florida with no ad budget, no agency and one wearable asset: himself. Companies had money for T-shirt campaigns but no way to buy a personality; Sadler packaged his own wardrobe, social feeds and camera as inventory and priced it so any small business could afford at least one day.

Sell days of the year like lottery tickets: a sponsor buys January 1st for a dollar, December 31st for $365, and gets a human billboard for exactly one day.

The pricing was the campaign: January 1st cost $1, January 2nd $2, and so on up to $365 for New Year's Eve, each sponsor buying its calendar day. For that day Sadler wore the company's shirt everywhere - on the street, in photos, in videos posted to YouTube, Twitter and live on Ustream - turning one garment into a full day of social media presence. Every day sold out in the first year, and in 2010 he doubled the scheme by hiring a second shirt-wearer, Evan White, with more to follow.

Year one brought in over $70,000 ($66,795 in day sales plus deals) for what was, on paper, wearing T-shirts; the business expanded to a team of shirt-wearers across cities and ran through 2013, earning Sadler national press from Mashable, Reuters and Entrepreneur and becoming the canonical example of person-as-media: inventory anyone can create, priced by a curve the customer can instantly understand.

The pitch was almost insulting in its simplicity: send Jason Sadler a shirt, pay him the calendar price of a day - a dollar for New Year's Day, two fifty for mid-January, $365 for New Year's Eve - and he would wear your logo all day, photograph and film himself doing it, and push it out through YouTube, Twitter and a live Ustream feed. In 2009 he opened the calendar and started selling.

Every single day sold. The escalating price curve did the marketing by itself: early days were impulse purchases at pocket change, late days became prestige buys, and the countdown structure gave the whole year a scoreboard. Mashable reported that the year grossed over $70,000 - $66,795 in day sales plus extras - for a business whose entire inventory was a drawer of T-shirts and a personality.

The scheme scaled by cloning rather than complicating: in 2010 Sadler added a second wearer, Evan White, and the company grew into a team covering multiple cities with the same day-by-day pricing until it closed in 2013. As a hustle it remains the cleanest proof that media inventory can be conjured from a closet - and that a pricing curve customers can recite is worth more than any rate card.

The day-of-year price curve was self-explanatory and self-promoting: every buyer's cost advertised the scheme to the next buyer.

Small businesses that could never afford an agency could afford January 14th, so the customer pool was effectively every company that owned a shirt.

Each sponsor bought not just a photo but a day of live, personal presence - human media that banner ads could not match at any price.

Selling out the calendar publicly created proof for year two, letting him double prices and headcount without changing the offer.

Inventory does not need a warehouse: a calendar, a shirt drawer and a daily price curve turned one wardrobe into a sold-out year - readable scarcity is the easiest scarcity to buy.

I Wear Your Shirt ran five years, from the $1 New Year's Day in 2009 to its wind-down in 2013, expanding from one shirt-wearer in Jacksonville to a team serving sponsors across the country and collecting coverage from Mashable, Reuters and Entrepreneur along the way. Sadler - later Jason Zook - turned the playbook into a career of buy-a-piece-of-me ventures and a book on personality-driven businesses, and 'wearable ad day' schemes became a recurring item in social media marketing courses as the textbook case of zero-inventory media.