Hkfeeling153 via eBay offers this open-box Retro Paper World Map
plus 35 cents
for shipping. That's tied with our mention from a week ago as the lowest total price we've seen. (It's a current low by $3, outside of other eBay sellers.) It's made out of 150-gram matte craft paper and measures 28" x 18".
Note: This is a brand-new, unused item that is not in original packaging. Expect it to arrive in two to eight weeks.