Mega zygarde ex double hit

I got two Zygarde cards on the same day, one in my first booster pack of the collection, and the second just minutes later.

I’m not sure if it’s extremely lucky or just part of the expansion’s pull rates for a little expansion.

I was thinking about selling them, but I’m not sure if I should sell now or wait to see if the price rises. It seems too low for a Hyper Rare and SIR.