Thumb Score: +20

Amazon [amazon.com] has The Calvin and Hobbes Portable Compendium Set 2 (Paperback) for $10.18.
Shipping is free with Prime or on $35+ orders.

Alternatively, Walmart [walmart.com] also has The Calvin and Hobbes Portable Compendium Set 2 (Volume 2, Paperback) for $10.72. Shipping is free w/ Walmart+ (30-day trial for $1 [walmart.com]) or on orders of $35+.