first question is why are you wanting it respraying? is it damaged? a scratch? stone chips? depending on why your painting it will depend on cost, if you were to come to our body shop with say stonechips and wanted the bonnet repainting an average cost is £220+vat, depending on how far up the stonechips went (if they went close to the wings,in which case we'd blend the colour into the wings) if we were to blend into the wings then would be in the region of £250+vat, £450 is seriously steep and sounds like main dealer sort of money and to be honest main dealers dont always mean the best job, we reguarly do work (and rectification work) for Audi, volvo, renault, nissan and hyundai, best to find a shop that you have seen work of before that way you know youl be happy with it