Later, you can get a 4/5 flier with haste for 5 mana, which is on-rate for your usual rare or mythic dragon anyway
No matter the platform, remember to check the key factors: platform fees will impact your final profit, ease of use determines how much time you spend, and the audience size and focus will dictate your cards demand
A Giovanni would be nice, as that would allow Electivire to one-hit KO Palkia from full health, but a little chip damage from Magnemite would achieve the same result
Selling cards one by one works when the individual value is high, but for bulk stacks, the trade-off is speed versus per-card margin
Instead, you can pay a whole bunch of money (although probably a smaller amount than you would unless you live within driving distance of the convention) to get all the cool loot that you would have grabbed in Philly