By all means if you like the artistry. But I don't collect these. There are thousands of banknotes out there with similar artistry that are actually banknotes.
Library Media Specialist, columnist, collector, and gardener...
Be very wary of the seller in the original link - they only have feedback of 55 or so and already have lost their 100% record. May be innocent enough but would be worth investigating to find out why someone marked them down?
Just because you can't see it ... doesn't mean it isn't there - Anon.
What you collect is so personal to you, if you like them and you'll get enjoyment out of them then I don't see why you shouldn't collect them. But I'm with radrick007, I'd check out this seller before I put any money down.
Although his feedback score is 55, he has 113 feedbacks, but he does have two negative feedbacks. One complains of a crease, which means it cannot be UNC, as listed, and the other feedback is in German, so do not understand the message.
Fantasy issues are created to sell them, they may be beautiful, but they don't have history, and for sure will not raise their value along the years. If you want to do a serious collection, and have it as investment, I don't think they are a good option.
On the other side, as Mona said, what you collect is your choice.
On my side, I collect for myself, and I like to show them to my family and friends, people who are not in numismatic hobby, only like them if they are pretty, no matter the age or history they have. Therefore, I occasionally buy something attractive to have in my show. I have the Harry Potter coins, Zamunda pounds (Coming to America movie), some very big Russian banknotes, some tiny German notgelds, the "geometrical" series from Somalia, the bike-shaped and guitar-shaped from Somalia, and of course colorized coins, bone-made, wooden, bamboo, ceramic and Transnitrian plastic coins.
I don't expect they are genuine, since I paid low prices for most of them, but people really enjoy them if they are not collectors, the collectors are more attracted for my old copper, silver and scarce coins.
For myself, I like to collect variants (design differences, mintmarks, engravers).
So, it's up to you what you collect. Just try to make your collection the best for yourself.
Happy collecting.
Just 10 options: you understand binary, or you don't.
Catalog Referee Coins, Banknotes & Exonumia: Uruguay, Cuba, Bolivia, Brazil, Chile, Colombia, Mexico, Peru, Paraguay, Costa Rica, Venezuela, Panama, Ecuador, Zamunda, Parva Domus and more.