of course your right, but the cost of wfp can seem quite high if you started trad, i got 10 scrims for about £30 in 2003 & bought another 10 5 yrs later lol
There is a high running cost before you make profit if you are a one man band, Rent/mortgage to pay, fuel, water cost, phone bill, electric, gas, tax, van insurance, public liability, any advertising/website, food etc, kids bills if you got kids, general wear on kit, list goes on lol