Thanks for the feedback!
Well just for context (a pack is 200 usually for 7 cards) a box contains 16 packs (Like the irl boxes) so total 112 cards. It is priced to be around 15 packs-ish cost. So a 10% discount. (For more info please check the info section in each banner)
Regarding buying singles, I want to allow the deckbuilder type of players to complete their decks without relying on gacha so that's why the low costs.
Now, if you wanna a UR-SEC (because you like the shipgirl or something like that), it can get too expensive directly. In that case you are better off opening packs! It is a great feeling to get some -SEC cards there!
Thats why I would prefer to keep a balance between gacha players, collectors and deck builders.