Jack the car up on Axel stands, spin the wheel and see if you reproduce the noise it might be easier to see whats going on before you make a conclusion.
Wheel bearing kits are cheap £18CHEAP-£25VAG its removing them where labour hits you as those nuts are tight for a reason.
Expect no more than £80 per side that might be cheaper depends garage?
But if you are brave take the whole assembly off and get the new bearings taken out and new ones pressed in (hydraulic press) for less than £30 I reckon? The hardest part of DIY is 30mm hub nuts you will need a long bar to get the leverage to undo them. But depends on how you take them off as the tracking might need doing if you remove any off the steering camber parts the hub.
