I started p/t trad in 1997 when I bought about £200 worth of work for £300. It was a fair price to pay as it was underpriced and out in the sticks - well 5/6 miles away!
I also worked for someone else on a 75% basis for three months that winter which was better priced as I still got about £70 a day for three days a month.
But it gave me three days work plus my own three days (Yep! I was new and £65/70 a day was what I could manage!) and something to build up from. It grew by recommendation/ people asking to about £500 per month when I decided to bite the bullet, drop my % work and canvass.
I canvassed commercial (3 miles from home) and some stuff about a mile from where I lived and luckily picked up about £250 a month commercial and about the same domestic.
So now, 1999 my round was worth about £1000 a month p/t and taking me about 12 days to cover it. In 2000 I went full time - I bought another £200 of good stuff from David Bishop (before he sold rounds regularly) for £600, but it was good enough for me to do in a day and a half of ladders. My round grew to about £1500.
In 2001 my one bit of luck was my bro-in-law whose factory offices needed a w/c and that got me another £150 and my round was now about £1800
By 2005 I was on about £2000 a month in the summer and £1800 in the winter from about 17 days/15days per month.
Then I went trolley wfp in May 2005
Tank in car in May 2006 (handed about a £100 to a new starter and replaced with £200 worth of better stuff)
Tank in Van Nov 2006 (dropped a bit more and replaced with better)
I now work 6/7 hr days in spring/summer, 5/6 hr days in winter - rarely in the rain (my choice) 15 days a month and my round ticks over at a rather higher rate than in 2005.
I simply take on better priced jobs and give away/drop awkward low priced jobs.
If I wanted to boost my round i'd be a bit more business like and put the bottom £500 up to about £600, lose a few and earn the same money for less time!