I'd agree, there are a few options there for around the £100-£150 range.Try eBay. Some of the big dismantlers advertise there now.
For the best possible match talk to some local bodyshops. For small parts a professional spray is not as expensive as you think.I've manage to come across a few parts here and there. How do you go about with paintwork? I contacted my local official volvo store they said dulux primer i assume DIY? I won't be as properly done as the panel beaters.