i bought my gs12 from a dealer in sunderland 3 months ago ,its an 05 reg,it didnt come with any luggage but does have the rails on the side,i tried always to do a deal to get at least the rack and top box thrown in ,now way he was having none of it .so if anyone has top box and rack or paniers at a reasonable price i would be more than willing to buy of them .
so if i were you if you can get them at the right price with the deal go for it.
My 3 BMW ali boxes came new with my 2006 GSA and have been swapped to my 2008 GSA and now onto my latest GS. So nearly 6 years old now, still looking good and should last another 6 years at least
Not sure whether they are any better or worse than the alternatives but very happy with them