I use Bob King in Wilmington too and they treat me very well. The only thing I go there for is an alignment. In order to do your alignment according to the book, they need to use a spreader bar and a tool (special bolt) to lock the steering box. I know they do it right at Bob King. Ask the $70 shop about that - bet they have no clue. To me it's worth it for the dealer to do it right. I also don't think your car has special camber and toe bolts. Maybe they thought you were asking about a newer model which might need them. Ask for Dale Eaves the service manager to take care of you - he will treat you right. Also if you're a vet, they give you a 10% discount, but you need to ask for it.

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Len
'59 220S Cabriolet-SOLD and living happily in Malta
'83 240D 351,500 miles original owner-SOLD
'88 560SL 41,000 miles - totaled and parted out
https://sites.google.com/site/mercedesstuff/home
'99 E300 turbo 227,500 miles
'03 SLK320 40,000 miles - gave to my daughter
'14 Smart electric coupe 28,500 miles
'14 Smart electric cabriolet 28,500 miles
'15 Smart electric coupe 28,000 miles