small scale pig keeping is never a way to make a quick fortune. The start up costs will only diminish when you have had a few. as HM states, make sure you have some firm commitment to help cover the costs. having done a few pigs now I realise it is a good job I am in it for the long haul and really love it. I now have three pig enclosure which are used in rotation to allow them to recover, one quite expensive arc which I move from pen to pen, a leccy fence system, and various troughs which also move about to suit. i have pig marking aperatus and various health and welfare items which are all long term investments. My family and friends get fantastic pork at good prices and i have a freezer full of tasty meat as well ( which has cost little in variable costs but carries some of of the fixed overhead burden).
and yes pigs are addictive. i would have loads more if I could but at the moment just have two weaners.
look at some of the other posts on pigs and maybe read a book or two,as recommended.
best of luck
carl