In addition to finding it directly at http://www.randomcha.net, you can now also find 100SP at these fine stores in NYC:

Community Bookstore & Cafe of Park Slope
143 7TH Avenue
Brooklyn, NY 11215-2202
Phone: (718) 783-3075

St. Marks Bookshop
31 3RD Avenue
New York, NY 10003-5536
Phone: (212) 260-7853

Mondo Kim’s
6 St Marks Place
New York, NY 10003
Cross Street: Between 2nd Avenue and 3rd Avenue
Phone: (212) 598-9985

Be sure to let them know that you appreciate it!