Neither player can Summon more than two times per turn. (Negated Summons count toward the limit. Negated cards/effects that would Summon do not count.)
Near Mint Unlimited - $3.95
Lightly Played Unlimited - $3.75
Moderately Played Unlimited - $3.20
Heavily Played Unlimited - $2.80
Damaged Unlimited - $2.00