That seems very high to me. Greasing cables 10 minutes each , max, truing wheels that are in good shape another 10-20 each, waxing or lubing a chain maybe 15 minutes, replacing brake pads maybe 10 minutes each. Adjusting an SA hub an extra 5 minutes over taking the cable off for regreasing...that seems like at least $75.00 /hr, and that's if you spend $37 on a new chain, grease and brake pads, all of which I could buy easily enough for $25 or less. Practice on these things would really speed them up. Keeping your LBS going is of course another factor. For $111.00 or 75 pounds..have no pound symbol... I would expect all the above. None of those tasks is very difficult and the only specialized tools needed are a truing stand $60-110, a spoke wrench $9, a chain breaker $15.00 and 10 and 15 mm wrenches which one should already have. 2 of those tuneups would cover all that. Plus you would have the pleasure of working on the bike,writing posts to resolve any problems you encounter and knowing you could keep your machine in tiptop shape all year long without waiting for an annual tuneup!