I bought a set of 16" OZ Racing magnesium rims in need of a serious refurb for £100, paid £120 for a refurb and £180 for new tyres and sold them for £550 about 6 months later (used them on my car for 6 months).

I also bought 2 sets of 15" RL7's for £180 all 8 wheels needed full refurb... I had all 8 done, bought 8 new Yoko AVS tyres, sold 1 set for nearly the cost of the 8 alloys, 8 tyres and all 8 refurbed, basically the set of fully refurbed alloys with new AVS Yoko's on them cost me less than £100

Trouble is some poeple can't see past the wheels when they need a refurb and offer/sell for silly money...

15" RL7's are seriously hard to find so a freshly refurbed set would get good £££, if you had them refurbed at about £100 I'd recon they'd be worth £250-£300... maybe more on Ebay