Maybe with enough damage-multipliers (City on Fire, Fiery Emancipation), especially in decks where your Commander is the damage-multiplier (Solphim, Mayhem Dominus), Undying Flames could get there, but the mountain's still a tall climb
First edition Pokmon cards attract significant value due to their scarcity and historical importance
Sports cards have had a strong market for graded cards for quite some time, so it was only a matter of time before Pokemon TCG collectors started to put weight into collecting graded cards as well
Now, ignoring that this is another case of a commander being turned into suicide fodder, there was a card in the exact same set (Newdoria) with the same effect, the same typing, lower stats to make it more easily-killed, and it didn't need a coin toss
The beautiful card design features detailed artwork of Pokmon next to their Trainer in unique situations such as battles