I called 2 dealers yesterday for servicing quotes,and this is what I got :
Dealer A
748R annual belt change service £565 +vat
749R 600 mile first service £184 + vat
Dealer B
748R annual belt change service £570 including vat
748R as above but '+' service £775 including vat
749R 600 mile first service £229 including vat
GAZ748.....Did the £350 that you were quoted include the belts being changed,as I believe on the 'R' they need doing every 12 months