Hello BassmanIU,
I'm afraid I won't be much help, other than to say that in my experience there can be a wide range of prices for outboard service work. I think a lot of times it depends on how busy the shop is. I would suggest that you get a couple of quotes. Replacing the lower unit lube is very easy to do. I do my own and if I can do it, anybody can. I spent around $6.00 I think for a lube pump from BPS which makes it real easy. I've noticed that Mr. Gamble is highly recommended on our forum for outboard repairs and his business is listed in the phone book as the Outboard Doc. Good luck on getting the work done and let us know who you end up using and how much $$$ it cost.