Either player can pay 800 Life Points to negate the Special Summon of a monster(s), and/or an effect that Special Summons a monster(s) and destroy those cards.
Near Mint Unlimited - $27.20
Lightly Played Unlimited - $25.90
Moderately Played Unlimited - $23.20
Heavily Played Unlimited - $20.40
Damaged Unlimited - $19.10