As you say Neil, might be worth £9 just to see how they go about it.
I doubt if £9 is the full story though, be interesting to hear how they go from £9 to their final price - will they lay their cards on the table before they start, or do they hit you when they finished.
Just my recent experience on pricing....
A job I did Friday morning, I quoted £125, he said couple others had quoted £85 followed by "I dont expect you to go down to £85 because I think you better then them". He wanted me to go down to a £100, we compromised at £115.
Later last Friday, I quote £75, I get told another quoted at £45, then he said "I guess you have something more to offer then them"..... so I explained what and I did the job at £75.