I did the exact same as this with the G's insurance. Started at 9am with a £8600 wuote and finished at about 6pm with 3 brokers slashing £25 a time off their premium......ended up paying about £2400 in the end
To be honest, the money asked is extreme. I'm not sure anyone could/would want to pay £6k for ins. I wouldn't pay it for a G but the combo of license, NCD, Age + car group means stupid price!!!!!