£8880 paid out over 2 years (inc deposit and VAT on everything) isn't bad to be driving around in an R, considering the 3 year GFV is 51% of RRP (£15259), it will probably actually be worth £16500 as realistic part ex.
Get it for 10% discount and it will have lost around £10500 in 3 years + around £3200 in interest) so £13700 cost to run for 3 years. If you change every 2 or 3 years then the lease is the better deal compared to buying on VW finance.
Lease = £4440 per year for 2 years
Buy outright = £3500 per year for 3 years
Buy via VW finance = £4567 per year for 3 years.
Kepping more than 3 years or not needing to pay interest and buying makes more sense.