My opinion based on my experiences the real surge on these rookie cards takes place when the next series of cryptocurrency cards is released.
If there is no next series, then these cards will still be a nice novelty collectible with a steadily increasing worth, IMHO. However, if there is a next series, then I believe dolphriends is right and these first series cards will be surge in price next summer. (I'm banking on it.)
Regards,
Chris
If you can't go on ebay and find just the base mini A&G back, the rate of buying these is through the roof. There should be a ton of the base mini's. I was shocked