Yes, a "pouf" is essentially a leather ottoman. They are made with different qualities of leather (goat, camel, cow), different colours and many have different patterns or even artwork on them. I've picked up several over the years, and they are great!
For a LARGE pouf of **good quality leather** (and some of them are quite large!), sadly, you should be expecting to pay more than 160dh...Sorry.
If you want a low quality one, or a small one, then you will pay a lower price. Haggle hard for everything, of course, but don't expect every vendor to just "roll over" and break down on every item. If you walk away, the vendor may or may not chase after you and that's fine. If you really want one, just keep looking and haggling, and hopefully you can find the one you want for a price that you're willing to pay. You will find many different styles, colours and sizes for sale. Don't stop and buy the first one you see as they are seemingly everywhere...
Edited: 11:02 am, May 12, 2011