Some of the best resources include: eBay Sold Listings: Search for your card on eBay and filter by sold listings to see what similar cards have sold recently
(Besides, the next card you drew is your Monster Reborn, so have fun with a revived Reshiram.) Now that I have pointed out the card's only minor set back, besides being vulnerable to cards like Dust Tornado, which destroy Spell and Trap cards on the field, your opponent still has the option of teasing with you and switching a monster they would like to keep safe from Mirror Force into Defense Position, if they manage to correctly guess that your suspicious Face-down card happens to be Mirror Force
This won't be the last we see of Ditto in this enormous form, but its other versions are much more visually unique and command a few more dollars than this simplistic Ultra Rare
[Cabaretti Charm] (version #4) RGW Instant Choose one Target creature gets +2/+2 and gains flying and vigilance until end of turn
And I NEVER noticed those two teeth
This will come in handy for my table below.* The final change cant be shown through an image without opening the box