Unless you are lucky to find a 2nd hand one, it seems about $150-200 is the going rate for a genuine R insert for the steering wheel. If that price is too much to swallow, then you might consider one of the APR versions for $40.....at least in the meantime?
APR Steering Wheel Insert Black MS100087 | Pro Speed Racing
APR Steering Wheel Insert Silver MS100088 | Pro Speed Racing
For reference, the part number for the genuine VW item is 5K0419685NPOP
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