Hey there,
thanks for sharing this great piece of Pokemon art! I acutally didn’t know that they exist.
According to the official Japanese Pokemon Center homepage, the first one called 「かんとー地方くちばしてぃ」(Kanto region: Vermilion City) was sold in 2016 for 49.500 Yen. You had to preorder them between October 15th and December 18th.
www.pokemoncenter-online.com/?p_cd=4521329205403
The second one called 「対決かびごん」(Battle against Snorlax) was only available in a lottery in 2018 for which you had to register between March 2nd and March 11th. They were limited to one per person and cost also 49.500 Yen.
www.pokemoncenter-online.com/?p_cd=4521329205410
Unfortunately I couldn’t find any information on how many were distributed on the quick.
Best regards from Germany and thanks again for sharing! I definetly have to get my hands on one of them!
Martin