It looks like you can buy the same gun new at almost the same price as some of these refurbs.
Example 1: Big Cat 1250 @ Walmart is $116.56 w/free ship versus $109.99 + $5 ship.
http://www.walmart.com/ip/Gamo-Big-Cat-1250-Air-Rifle/17420173
Example 2: Gamo Hornet (1200 fps) @ Amazon is $99.99 w/free Prime ship versus $99.99 w/$5 ship on Woot.
http://www.amazon.com/Gamo-Hornet-Rifle-177-Caliber/dp/B004ZIEWIY/ref=cm_cr_pr_product_top