Each Pullbox has 100 hits, containing many great cards, multiple prizes and a 2x pulls card (double the pulls you ordered) 
 
Prizes For Current Pullbox
Surging Sparks ETB - 15 race spots 
Collection Chest
Mega Latias EX Box
Slab 1
Slab 2
Mega Symphonia Pack x2
Mega Symphonia Pack x2
2x Pulls Card