I spent about £3k on my Golf before waking up and realising I was being a complete douch spending money I oculdn't afford too

Got cold feet and sold the turbo, exhaust, cat, everything I had bought and stored up to get fitted. Partly regret it now. If I'd stuck to my guns and fitted it all I'd have some awesome power and sound coming from the car now.
Rear spoiler gets my vote. Where would you buy it from? I bought a cheap one from eBay but it was so poor I refused to fit it to the car, sold it on to come boy racer instead. I'd like a genuine one, but don't want to spend a fortune.