What is this card worth

Izzet Guildgate PIO 267 No price yet Izzet Guildgate PLST GRN-251 $0.20 The List Izzet Guildgate FDN 691 $0.14 Starter deck Izzet Guildgate CLU 240 $0.12 Izzet Guildgate RVR 405 $0.28 Retro frame Booster Fun Izzet Guildgate RVR 281 $0.29 Izzet Guildgate C19 253 $0.34 Commander deck Izzet Guildgate GRN 251 $0.22 Izzet Guildgate GRN 252 $0.22 Izzet Guildgate C18 257 $0.31 Commander deck Izzet Guildgate MM3 237 $0.30 Izzet Guildgate C15 291 $0.20 Commander deck Izzet Guildgate C13 297 $0.11 Commander deck Izzet Guildgate DGM 151 $0.12 Izzet Guildgate RTR 242 $0.14