Hassig and Oh/ The Hidden People of North Korea (R&L, 2009, 296 pages) Cloth $39.95: 2, 476 units sold. Total revenue: $68, 981 Kim/ Escaping North Korea (R&L, , 256 pages). Cloth (10/2008) $26.95: 6, 520 units sold. Pper (4/2010) $16.95: 2, 191 units sold, e-book 426 units sold. Total revenue $109, 052