ok so we have
Golf R - 18" Alloys Wheel - "TALLADEGA"
7.5J x 18 H2 ET51
Part Number 5K0 601 025 H 88Z (bright silver)
approx £????
Golf R - 19" Optional Wheel - "TALLADEGA"
8J x 19 H2 ET51 Part Number 5K0 601 025 M 88Z (brightsilver)
8J x 19 H2 ET51 Part Number 5K0 601 025 M AX1 (Glossy Black)
approx £500
personally I would only really consider the 19's as Ive always felt the OE Pesc's look too small in 18, as do the R wheels in 18.
so the only bit missing is the wheel weight ........
I would not consider reps to be honest as they are usually silly heavy (and Im thinking the OE 19's arent exactly going to be lightweights either)
anyone actually buying an R from new would be silly not to spec 19's and downgrade afterwards imho.