This is just my opinion, but I don't think it is very strong or very unique.

Many problems with this:
1. The post card is tiny, therefore not real.
2. The post card is pre-printed with information like the room number. Not real.
3. The cards can't be shuffled freely.
4. The routine seems procedure heavy
5. The whole thing just doesn't seem natural.

This feels like an effect where the creator was trying too hard to just come up with something to sell.

Steve Cook generally comes up with some fine mentalism routines. This is not his best work. I got this to put into a travel-themed mentalism show. It's OK, not a world-beater, more of a card trick than anything. The previous poster pointed out some problems with the pre-printed prediction. That's easy enough to overcome: Handwrite a prediction of the city, hotel, and room number on an actual post card and stick it in an envelope. That overcomes a bunch of issues. What it doesn't solve is that this is a confabulation routine without your doing the confabulation method. It's procedure heavy. You'd be better off doing this as a mental epic-style o** a****, using the cards only for a single f****. The cards are nicely made and handle well, though.