Here is a tip if you fancy a go. Go and get some colourmatched touch up paint for your car. Next wash the keyed panel with soapy water and dry. Get you touch up paint and paint along the keying making sure the paint is raised above the level of the rest. Once dry get some t-cut scratch remover and polish in circles. Do this until the new paint is flush with the rest. When it feels smooth get a decent colour restore polish and polish the panel (and rest of car). Done well you won't see the scratch. It's a French polishing technique I developed when someone keyed my VW. Works a treat and saves huge amounts of cash!