Hi there, Roachi:!

I would say between 2500 to 3000 gold for each item in this event set:
Kitschy Knits - From Channah
Vagabond's Vuvuzela - From Nami
Luminous Lights - From Cain
Sparring Supplies - From Tesel
Gag Gifts - From Peeblo
Gorgeous Glass - From Cessy

And hmm I am not sure about this event set, as a lot of them seem to be readily available in the marketplace at the moment.
Candystick Fences
Candypuff Trees
Licorice Lise
Candywrap Wallpaper
Goody Gumdrops

I will get back to you on those! ^_^