What everyone is saying is correct! You're items in the shop aren't really high demand, they're more like items a collector would search for and the dubloon's will most likely be the first items to go as they can be used for training in the Pirate Academy of spent at the Dubloon Shop.
However your prices are WAY LOW (and a few a bit high) and I would hate to see you jipped or have someone buy off you and just turn around and sell for a profit. If you want to sell your items but ensure they're going to someone who WANTS them and won't re-sell them I would only go a little bit under the Jellyneo Database listed price, so if I were listing these items in my shop this is around what I'd price them;
The Snowager - Between 24,000-25,000
Yellow Sticky Hand - I'd stay right at 170, no lower, no higher.
Two Dubloon Coin - That's exactly what I would have price it! Sometimes If I want something to go faster I'll go down 1 np and bring it down to 399. The human mind doesn't necessarily comprehend a price as a whole, so when someone sees the 3, they jump at it as a steal. My mother had these crafts that she made and sold for $10 and when reading this theory online somewhere she marked them as $9.99 and she sold WAY more surprisingly. I will never understand this.
One Hundred Dubloon Coin - I would go somewhere between 17k-17.8k
Wooden Snowflake Scultpure - Seems like a good price where it's at, maybe jump it up another 500 np just to appeal more to collectors than to re-sellers. :)
Kayla Pen - I would definitely bring this one up more, somewhere between 16.5k-17.5k
Wock Till You Drop Speaker - Between 15k-16k
Icy Decorated Tree - This one seems pretty good, but maybe add another 500 np?
Tapira - Perfect Price :D
Biscuit Chair - This one seems good too!
Coltzan Negg - These are actually only worth 100 np, these might sell better if you went down to exactly 100np each.
Peophin-shaped Souffle - I would go up between 12k-13.5k on this one
Earth Faerie Wing - These are marked WAY low actually under 17k lower than what they're worth. I would definitely go between 40k-45k and that would still be pretty low, they're valued at 49.5k
Wind Up Faerie Xweetok - These are actually valued at 200 NP and I would just bump it up to that exact price, just because 200 np is so cheap to begin with.
Red Stapler - I would mark this between 25k-28k
Purple Lipstick - This is WAY low as it's value is 55.5k, I would go somewhere between 49k-53k
The way I price my shop is to go just under the price of expensive items (a couple K here and there), if it's between 5k-15k I either do the exact price or go a tiny bit under, usually not too much under 1k and if it'es between 1np-5k I do the exact price that is in the jellyneo database.
The highest amount of np's you can charge in shops is 99,999 and after that I just kinda price on value weather that's a bit under Jellyneo's price, right at it, or over, depends on the item.
Remember raising the price on these items are not the reason they aren't getting bought, they're just not items that are HIGH DEMAND as everyone has stated. Even following my price guideline they're still lower. I usually sell my items quickly as I try to go a tiny bit under what they're worth, making my item the cheapest on Shop Wiz and the first to go when people are looking for it :)
