This surprises me. I'm not the greatest fan of B&Q tools, but I have found thier returns policy to be second to none. At our local branch, you more or less, just put the item on the counter, give them the reciept, and get the money back. No questions asked.The small print on the B&Q pro tools says they are not designed for professional use. I bought a Jigsaw which was shocking - didn't cut straight. Took it back and said it wasn't up to 'pro' standards. They told me to sling my hook!
Onion_soup, I suggest you change your strategy. Instead of:
"use it once then throw it away." You should:
Use it till it's kn*ckered then return it for a new one.
You can then either continue to "build the cost into your bill" (making more profits) OR stop building it into the bill (making you more competative). The choice is yours.