This is a double pack that will give you more bang for your buck.

User Rating: 9.8 | Castlevania Double Pack GBA
Konami makes an excellent attempt to put a double pack of two rare GBA games, and actually succeeds. The graphics in both games are perfect, from the opening sequences to the character animations. The music is of high caliber, using a mix of organ music and modern-day rock music. The sounds make excellent use of the GBA's sound processor, with tons of voice clips and very realistic sound effects. The controls in both games are very tight and quite suitable for almost every gamer. Asides from the main quest of both games, there's an excellent amount of unlockables, multiple endings and the occasional urge to get 100% of the castle map completes. The soul-capture system in Aria of Sorrow gives this double pack even more replay value. The Castlevania Double Pack is, by far, the best double pack seen on the GBA to date.