I think all Gilgamesh has to do is hit one equipment in order to have paid for itself
$2.20 Rare-B-Gone Sorcery Each player sacrifices all permanents that are rare or mythic rare, then each player reveals their hand and discards all cards that are rare or mythic rare
No glasses made out of paper or pipe cleaners
send 1 Pyro monster from your hand to the GY, and if you do, destroy that target, and if you do that, inflict 500 damage to your opponent
It is not uncommon for a new player with a starter deck to immediately be matched against someone with a fully-built tournament-level deck that they have virtually no chance of winning against

-2 WIND Barrier Statue -2 WATER Barrier Statue -2 Raiden -0-1 Summoner Monk -1 One Day of Peace -1 RotA -1 Soul Charge -1 Compulsory -2 Mirror Force -1 Skill Drain -3 The Huge Revolution is Over +2 DARK Barrier Statue +1 FIRE Barrier Statue +1 Thunder King Rai-Oh +2 Mist Valley Falcon +2-3 Traptrix Myrmeleo +0-2 Traptrix Dionaea +0-1 Tsukuyomi +0-2 Juragedo +3 Pot of Duality +1 Book of Moon +2 Magic Planter +0-2 Draw Muscle +2 Call of the Haunted +3 Fiendish Chain +2-3 Lose 1 Turn +2 Storming Mirror Force +1-2 Traptrix Trap Hole Nightmare +0-2 Time-Space Trap Hole +0-2 Grand Horn of Heaven +0-2 Anti-Spell Fragrance -All Synchros -1 Emeral -1 Utopia +1 Key Beetle +1 Cairngorgon +1 Abyss Dweller +1 Diamond Dire Wolf +1 Dark Rebellion Xyz Dragon +1 Black Corn +1 Maestroke If you are curious for why I am making these suggestions, feel free to reply and I will post a full analysis and reasoning