Again, there is not enough data at the time of writing to give an average market value for the card
I thought about cutting Reflections of Littjara, but changed my mind as I thought about how important it is to have a fair amount of Merfolk on the battlefield at all times
Continuing with the example from above, if players need to rely on Single Strike Energy for their deck to work, the Urn of Vitality from Battle Styles allows players to retrieve Single Strike Energy from their discard pile

Mime) #39 - Ditto (Pikachu) #40 - Ditto (Squirtle) #41 - Dragonair (delta species) #42 - Dragonair (delta species) #43 - Golbat #44 - Hariyama #45 - Illumise #46 - Kakuna #47 - Kirlia #48 - Magneton #49 - Metang (delta species) #50 - Persian #51 - Pupitar (delta species) #52 - Rapidash #53 - Shelgon (delta species) #54 - Shelgon (delta species) #55 - Skarmory #56 - Volbeat #57 - Bagon (delta species) #58 - Bagon (delta species) #59 - Beldum (delta species) #60 - Cubone #61 - Ditto (Charmander) #62 - Ditto (Geodude) #63 - Ditto (Pikachu) #64 - Ditto (Squirtle) #65 - Dratini (delta species) #66 - Dratini (delta species) #67 - Drowzee #68 - Eevee (delta species) #69 - Eevee #70 - Holon's Magnemite #71 - Holon's Voltorb #72 - Koffing #73 - Larvitar (delta species) #74 - Magnemite #75 - Makuhita #76 - Marill #77 - Meowth #78 - Ponyta #79 - Poochyena #80 - Porygon #81 - Ralts #82 - Sandshrew #83 - Slowpoke #84 - Staryu #85 - Staryu #86 - Taillow #87 - Weedle #88 - Zubat #89 - Dual Ball #90 - Great Ball #91 - Holon Farmer #92 - Holon Lass #93 - Holon Mentor #94 - Holon Research Tower #95 - Holon Researcher #96 - Holon Ruins #97 - Holon Scientist #98 - Holon Transceiver #99 - Master Ball #100 - Super Scoop Up #101 - Potion #102 - Switch #103 - Darkness Energy #104 - Holon Energy FF #105 - Holon Energy GL #106 - Holon Energy WP #107 - Metal Energy #108 - Flareon ex #109 - Jolteon ex #110 - Vaporeon ex #111 - Groudon * #112 - Kyogre * #113 - Metagross * #114 - Azumarill

Materials look like some kind of playdoh
Flashback will exile the card rather than put it anywhere else, including into your hand because of buyback