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 - $25.80
Lightly Played Unlimited - $24.50
Moderately Played Unlimited - $21.90
Heavily Played Unlimited - $19.40
Damaged Unlimited - $18.10