If you want to secure a fair offer, always know the market value of your cards beforehand and be ready to negotiate a bit
Arcee, Sharpshooter Assaultron Dominator Blaster, Combat DJ Depthshaker Titan Flamewar, Brash Veteran HYDRA Assault Robot Interceptor Mechan Juggletron Kavaron Harrier Kavaron Turbodrone Kilo, Apogee Mind Kree Sentinel Liberty Prime, Recharged Machinesmith Automaton Mechanized Ninja Cavalry Megatron, Tyrant Mouser Mark III Non-Human Cannonball Omniclown Colossus One-Clown Band Optimus Prime, Hero Oreplate Pangolin Pinnacle Emissary Ravenous Robots Red Tiger Mechan Rose, Cutthroat Raider Roving Actuator Rust Harvester Slagdrill Scrapper Slicer, Hired Muscle The Motherlode, Excavator Ticking Mime Bomb Ultra Magnus, Tactician Zookeeper Mechan
Flashback [cost] means You may cast this card from your graveyard by paying [cost] rather than paying its mana cost and If the flashback cost was paid, exile this card insteadof putting it anywhere else any time it would leave the stack
There are a lot of other knobs here though
You'll find a Through the Ages card in one out of three Play boosters , so you can expect one FCA card in 33.33% of the FIN Play boosters you crack