BLDGWLF Limited edition sticker series.
Each sticker of the series is printed in one and final edition of 1,000.
And they're free (well, almost)!
$0.01 (default price can't be $0 on Big Cartel) + Shipping & Handling and you're good to go.
April 2014: BLDGWLF x Hedof (Rick Berkelmans).
3" x 3" square stickers printed on thick and durable vinyl by the great people at Sticker Mule.