I got a bootlid re sprayed, including belnding into rear quarter panels for just under 400 but that included a small dent i put in it with a huge gate and was also 4 years ago.I know the bonnet is bigger but it's less work than that. Around 600 should cover the bonnet. Spray shops mostly do insurance work so things are a little different when u walk in with cash. play 1 against the other and get the best price but remember, you get what you pay for.