Just noticed my Tiguan AC isn't very efficient, take ages to cool down then really not that much anyway. Took it to mechanic and he said not re-gas looks like compressor issue and referred me to AC guy..but before I do anyone have idea re cost i should expect etc?

Google search seem to indicate it can be costly and wondering if worth it due to age and value of the car. Had a Land Rover Freelander before this and at 8 years old its compressor went and quoted cost was $4000+ and since timing chain was due too ie another $2000 I just traded it in for this car..so hoping cost not in the same ball park.