Yep - loads on eBay.
I got a set of 4x 15" alloys for £42. They even had good tyres as well. My plan is to fit a set of 4 Colway A/T tyres that I bought new for £99 delivered - bargain!!
Just make sure that you buy the correct alloys for your model year. 1997 - 2000 alloys do not fit 2001 - 2006 models properly. (nuts line up, but wheel does not seat correctly on the hub)
Any queries feel free to ask.
If you have an early Freelander (like my 1998 model) then all Freelander 1 wheels fit without a problem.
You will also need alloy wheel nuts - dont use the steel ones as it is not safe!!
Regards,
Steve