Buying school supplies

[Angel Sky Pendragon]

~walks into store and walks up to the store manager~ hello I need some supplies for school:
-Dress robes
-A potions kit
-A wand
-Many quills and parchment
-Conturing the Dark Arts grade 3
-The Brewing of Potions grade 3
-Intermediate Magic
-An introduction to Transfiguration

[Pro. Husko]

Well, if you bought it all sepretly iy would cost a lot. But we have many sales, such a 3 books for 10 posts. The dress robe is 3 posts. The wand is 2. Then the 4th book will take it up to 20. Parchment and quills come free when you spend 10 or more posts. And I'm sorry but we don't carry potion kits, jokes 'n' spokes might though.
20 posts please.
What color robes do you want?

[Angel Sky Pendragon]

~hands the clerk 20 post and takes the supplies~ I would like a sky blue robe please.