3M makes a headlight restoration product that works extremely well. If you have a drill motor, masking tape and an hour you can make your headlights new looking again. Less than $20US. New old stock headlamps in the states go for between $600-$1000 each when you can find them, used ones from the salvage yard are going to need refurbishing and are around $200 each. Some folks just use fine, finer,finest wet/dry sandpaper and polishing compound. This is basically the kit that 3M has prepackaged with the discs and holder for your drill motor. Good Luck Mate!
http://www.3m.com/product/informatio...ns-Repair.html