Motorhead, I believe the labour charge was an additional ~$400. As I was +/- 2,200 miles from home, it was money well spent.
More recently, I had the head gasket replaced as it started to drool near the firewall end of the engine. That was around $1,800 but this included taking the head to a machine shop to check the guides (deemed to be hardly worn); replacing the timing chain, and water pump. While not in chronological order, I did have the evaporator changed prior to the Canadian road trip of 2005. This trip to the shop came in at ~$2,300. Different contributors to this forum have been fortunate to go quite along time without having these issues manifest themselves; many others could chime in on having a similar experience to me; i.e., evaporator, wiring harness, and head gasket all needing replacement at one point. Having had this work done, I am still not disappointed with the decision to purchase the car a couple of years ago. I always thought that the '94 & '95 E320 TE was a well designed automobile that was safe, versatile, great to drive, and the subjective side of me still thinks they are a great looking vehicle.

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'82 300D Turbo 204K
'10 Toyota Prius 85K
'13 AMG C63 (P30) 23K
'14 Audi Q5 TDI 46K
'16 RAM 2500 CTD 12K

'10 VW Jetta TDI 65K (traded)
'12 Nissan Leaf 34K (returned end of lease)
'15 Audi A6 TDI 25K (traded)
'95 E320 166K (traded)
'93 300D 2.5 Turbo 168K (sold)