Hi Neil,
IT all, depends on how much you want to pay for a kit and what quality of kit you want to use.
Bear in mind all the usual pit falls of high price apdoesnt mean high quality, neither does low price mean low quality.
Why don't you introduce yourself to the forum here
http://www.penturners.co.uk/forumdisplay.php?f=11
Tell us a little about yourself, what you do, what experience you have and what you want from pen turning.
It all helps break down barriers and also helps us understand who you are and not just another robot asking simple questions.
Look forward to hearing from you.