The Premium Packs (プレミアムパック Puremiamu Pakku) were devised by Konami to provide players with the opportunity to acquire high-value cards, at a relatively-low price compared to that of a Normal Booster Pack.
OCG : In the OCG, Premium Packs proved very popular. They were met with much enthusiasm, primarily because normal Booster Packs in the OCG are not guaranteed a rare. This method of delivering high-value cards at a modest price looks set to continue.
TCG : In the TCG, Premium Packs serve a slightly different purpose; As can be seen from Premium Pack 1, this pack was aimed at releasing cards previously only released in Japan. Premium Pack 2 continued this trend.Premium Pack 13