These puzzles are made by Karmin International. They MAY be found in BigLots stores in the USA, but merchandise there is inconsistant. They could also be at KBToys Outlets also. They should be about $2.00 each. There are 4 puzzles around 2009?
#1 A JigSaw Puzzle with Sonic X theme. This one has Eggman and Shadow, who you can put together with 100 pieces. It likely makes the picture on the box, but without Sonic's head. #2 The usual 'jumping punch' Sonic from Sonic X. #3 This interesting puzzle has the whole cast, but Tails is looking especially shy or guilty. #4 This last puzzle seems the least well designed, with random Sonic X stock art characters thrown all over it, but at least Rouge made it onto a puzzle.

Karmin International
(copyright) 2004 Karmin International
Maketed and Distributed by Karmin International Darval, Quebec
Made in U.S.A (info credit to SonicEmerald)