Mark
I only started fly tying a few weeks ago for my trip to Los Roques. It is addictive!!
I bough a Regent for about £18 it is fine. I got a kit with all the tools for about £11, again fine for my purposes and cheaper than buying individually.
The materials vary in price but again with some careful selection they can be bought at a reasonable figure. Eyes can be expensive, as can good quality SS hooks.
Bury St Edmunds has a great shop which has some the best prices I've come across if you are in the East Anglia area. (but I think you might be west country)
It is great fun and I can wait to catch my fist fish on my own fly.
Good luck