2015 Unesco Dinosaur Park Error Postcard Value

Hello, I have a UNESCO Dinosaur Park Error Postcard.

Barely any of these made it into the hands of the public as they were culled from sale so damn fast. I can't find much information online for these because they are so rare.

Is there any value to the postcard or do stamp collectors not care about those?

Sorry, I am usually on coincommunity. I dont collect stamps whatseover. I just remember buying it and telling myself to hang onto it seeing the frenzy of people buying the stamps. I had a ton of the error stamps, first day cover and souvenir sheets. It's insane to see THOSE going for hundreds on ebay now. Wowza makes me regret selling them for $50 back in the day lol.

Webb's Postal Stationery Catalogue 8th Edition [page 160] lists the card's value unused as $250.
It is illustrated on the front cover.
If I'm not mistaken, the (erstwhile, sadly) Corgi Times editor reported the number issued was 25.

I believe this stampcommunity sent out the first indication that the issue was withdrawn.
(What a talented bunch they are!)
Luckily, the local post office had not heard yet and had lots to sell - but no postcard.
(I advised the teller to save a few booklets for herself — she thanked me later.)

To my amazement, a week later I received my Canada Post order, sent to my US post office, and there it was!
My hoodoos card!

I'm sure you can make up for any remorse in previous sales by selling your card now...