Just in regards to what the guy above said ^, unless you're very confident with using putty/filler, and pressurized cans I'd strongly suggest it can be a lot more hassle an easier just to pay someone to do it professionally upfront.
Don't get me wrong if you're up for it give it a go, as it's worth being able to save $250-300 bucks. But, I've seen some home done jobs that look alright on completion but several months down the track they look shocking. Especially if you struggle at blending.
But it's up to you! It'd be mad if you can save yourself the cash I'd say $250-300 would be around what you'd have to pay too, going on a similar scratch that I've had.