This may be YMMV, but I picked up a couple of copies of Jampack Vol. 14 for only $1.99 this weekend. Also I'm aware that lately there have been two versions of some Jampack's with only slight differences in one to two game demos, so there could be one that is $3.99-4.99 like at EB.com at your local Target.
EB link: http://www.ebgames.com/product.asp?product_id=281481
EB link: http://www.ebgames.com/product.asp?product_id=281481