Okay first of all, I am assuming this "magic stick" you speak of is meant to mean a wand, second, the answer to your question is that it could be anywhere between around 8 inches to 11 inches. Although, it could be less or more than that, each wand is unique, not only in it content and type of wood, but in its length as well.
You mean, how much does Harry Potter's wand cost? You can buy amazing replicas from a company called Noble Collection which are just shy of £30
the shrieking shack
A beaters' bat is described to resemble a short baseball bat..
A staff in Harry Potter could refer to the Hogwarts Staff (Teachers, employees, etc.) or it could refer to a walking stick such as Lucius Malfoy's staff/cane or Mad Eye Moody's staff.
I'd say a Cleansweep. They're pretty much the worst broomstick you could get.
You mean, how much does Harry Potter's wand cost? You can buy amazing replicas from a company called Noble Collection which are just shy of £30
A wand means a small wooden stick used by a magician (for example, Harry Potter carries a wand in order to perform magic).
the shrieking shack
Go out and find a good stick and whittle it into a wand.
a bludger
Essentially yes. All magic wands in Harry Potter are made from various types of wood, in Harry's case this wood is Holly. They also contain a core, typically dragon heartstring, phoenix feather or unicorn tail hair. There are other wand cores, although they are not generally used in British wands and don't appear frequently in the series. Harry's wand contains a phoenix feather.
It didn't have a name, it was just named 'Toy Broomstick' in Lily Potter's letter to Sirius Black (The Deathly Hallows). Unless you mean his first real broomstick which is the Nimbus 2000.
i dnt think so
A potter Stick maker.
A beaters' bat is described to resemble a short baseball bat..
A staff in Harry Potter could refer to the Hogwarts Staff (Teachers, employees, etc.) or it could refer to a walking stick such as Lucius Malfoy's staff/cane or Mad Eye Moody's staff.
That it doesn't matter what you look like, but it matters what is on the inside.