To add to what ok4450 stated–not only will the timing belt not squeak, but it will also give no indications whatsoever of its impending demise. Your engine will be running normally one second, and will essentially be severely damaged goods a milisecond after the timing belt snaps.
Whatever the cost of replacing the timing belt (and water pump, and serpentine belt, and all belt tensioners) might be, once the timing belt snaps you can add about $1,500-2,000 to that price for the engine repairs that will be necessary.
As to price, some new car dealers (Honda dealers come to mind) have very competitive pricing for timing belt replacement. Whether VW dealers are in the same category, I can’t say, but it should be easy to compare the dealer’s price quote with one or more independent VW specialists in your area. Most areas have at least one indy VW specialist, simply because of the reputation for bad customer service at most VW dealerships’ service departments.