Talk:Boost/@comment-5689421-20121124210927

just boosted a level 1 card with 10 cards all at once and it cost 2600 silver

got ultimate boost leveled up to 11/40 27%

[invisibiliy] Invisible Woman and 10 Invisible Woman cards (if it matters)

so 1 card at lv1 costs 75 each but 10 cards cost 260 each

so is it more efficient to boost 1 card at a time?