Where can I buy kickboxing bags, and what's the best filler?

I'm looking to pick up a kickboxing bag soon. Does anyone know where I can find some decent ones that won't break the bank? Also, what are they usually filled with?

www.profightstore.com

It's just all fabric and rags, honestly.

- Joe -

I don't want to start a whole new thread, but does anyone happen to know how much a 6ft PRIDE punching bag costs at Nike?

I honestly think your best bet is to order through a coach at a club like that—they usually have their own private suppliers, which ends up being way cheaper. I did the exact same thing once and haven't looked back! Steve already mentioned how they just pile up the gear, and since I really don't know what you should be paying for this... maybe try browsing around on Amazon or some retail sites, just to get a rough idea of the market prices.