That's the same kinda numbers I was quoted by my local bodyshop to do a spoiler and front splitter. Although they did say they might have to charge extra if they have a lot of reworking to do to get the bits to fit.
Paul, there was a guy on .org that said he would 'be all over it at those prices' so I'll drop him a PM.
There'll be pictures to follow, of course, but it might be a couple of weeks.