Is there such a thing? How about some nice pubs? Thanks for your help.

What's "very inexpensive"?

Under 10 quid. I would also like to experience the rage which is known as haggis. Where can I get some.

Haggis is not exactly a "rage". It's a very traditional dish - not sure where you would find it in your price range - or if you would want to eat sheep's stomach and oatmeal if you could find it.

I had a fun dish in cafe at the Edinburgh Woollen Mill: haggis nachos .. around £7, I think. It was made with fresh fried potato slices. I've served it that way since coming home--for a Scottish celebration.

The other place I ate haggis in Edinburgh was the Queen Anne Café at the Edinburgh Castle. It was the traditional serving style of Haggis, neeps & tatties, still £8 on the menu (http://www.edinburghcastle.gov.uk/in...ials/cafes.htm)

I usually could eat quite well for little cost using the local stores, ex: the Scottish Midland Co-op stores. It was really nice to purchase locally grown raspberries when visiting last summer--yum!

The Urban Angel, three locations in Edinburgh. We found the food very much to our liking - they use seasonal produce and often organic as well. Lunches are around 6-8, dinners (including traditional as well as a very good vegetarian haggis) run 10-12.

We had some good meals a few years ago at Always Sunday on the Royal Mile. Definitely cafe sort of food (soups, sandwiches, etc) and not open past six or so, so not sure if that's exactly what you're after. But it's in your price range.

Try the Mosque Kitchen which is what it says on the tin & very cheap. Also look for lunchtime specials at various restaurants.

I'd also look at the restaurants of the various department stores in Edinburgh - but most don't serve food after late afternoon.

We had lunch a couple of times in a large pub called the Standing Order, at 62-66 George Street, where food was reasonably good and inexpensive, and I believe I had haggis there. It is in a former branch of the Bank of Scotland, and one of the rooms has a huge green door to an old vault.

We had haggis in several places, it is widely available and I liked it. It reminded me of corned beef hash in texture and general type. It was part of the traditional Scottish breakfast served at some B&Bs where we stayed in the countryside.

I was interested in
"or if you would want to eat sheep's stomach and oatmeal if you could find it."

I wonder how many foreigners think that you eat the casing.
I remember telling an American acquaintance that nowadays you usually get it in a plastic casing.
"You mean you eat plastic?"
Another American friend who is a brighter bulb on the string explained that you don't eat the bag when you do boil-in-the-bag.
Anyway to return to our muttons. You eat the inside bit of the haggis only and it can be delicious. Haggi vary a bit in quality, but basically it's a sort of large sausage.
Our late lamented cat liked it when we had haggis because he got the casing.

Thanks for that, I would assume the stomach would add a more unique flavour. I want that. Who has it?

update on AlanRows post,the Mosque Kitchen is opening up in the corner of Nicholsin Square,taking over the Oman's place (that didn't last long)
For pretty cheap pub meals try Bert's Bar in William street,very nice fish and chips(£6.99),various pies etc.Don't know if they do haggis though.
Some of the Indian resturants in the city do haggis pakora.

The Worlds End bar on the RoyalMile does haggis tatties and neeps as will most of the bars in that area that serve food.

Try the very tasty baked potatoes from the shop at the top of Cockburn St just off the Royal Mile. Huge potatoes, big choice of vegetarian fillings, including veggie haggis. Very generous, cheap and filling. But there's only one tiny table if you want to eat in ( lots of benches nearby though).

We enjoyed the food at The Spoon.
http://spooncafe.co.uk/

'Petit Paris' in the Grassmarket is very reasonable!