Yep! With the exception of Ponyta which was a pack insert you either have to pay a lot of money or get really, really lucky (wasn’t me who won this one). Depending on condition most of these are anywhere between $800 and $6,000. If you haven’t been following the thread on here about them, I have an article about the set on my blog including what we believe may be the source of these along with counts of all the copies I’m aware to have surfaced so far: pichu.blog/unlimited-e1.
I’ve already posted in this thread already, but I guess in keeping with not going too off-topic, here are my 3 Pichu cards from the set - the Pichu in the middle has been with PSA since May:
