The credit is valid until 9 April 2009 but comes with certain provisos, namely that it cannot be used to buy from third-party merchants on the site and is not eligible for special-order titles, e-books or downloadable e-content, wireless service plans, gift certificates, gift-wrap, taxes, or shipping and handling charges.
Those customers who bought more than one player will receive the $50 credit for each player, up to a maximum of ten units.
It is unclear if UK or other customers will be given the same credit as Amazon's UK press office was unavailable for comment, despite repeated attempts to contact them.