Probably disappearing...
I am also wondering about dis-balance between three of them...
There's always been an imbalance on collectibles, encourages trade, very occassionaly you get a lot of the 1 your missing, my personal nemisis is food carts but i'm sure there's someone who gets nothing but food carts. They will either vanish or sit here until next Christmas, guessing vanish as there's no storage allocated for them.
If you watch TO regularly, you can realize food cart, kettle, cauldron always expensive and nearly no one sell it, everybody want to buy. But scarecrow...my personal nemisis is food carts but i'm sure there's someone who gets nothing but food carts
Conversely, xmas event collectibles' dispersion is fluctuate, so sometimes bells, somtimes gingerbreads overwhelm. I could never wait till all of three has too-too much, so yes, trade them...
I agree with both of you, but Christmas collectibles can be used only for present production and thats it. I have constant lack of gingerbread (20-25% less) and also trying to refill via market, but price for them is nebulous...