That's what, about $150 US? That may seem high to some that are capable an knowledgeable enough to do it themselves. But straddled with the lack of knowledge, proper tools, and working dexterity.. Some of us would be happy to pay that occasionally. I can do a lot of preventive maintenance on my bike, from oil changes, to spooning on tires. Although, after the last 3 sets I changed, I swore each would be my last. Grunting and moaning I can still do pretty well. Not so much with the mechanics of working hands that require any degree of finesse. Then there's the problem of my current mental state.. Yep, $150 sounds pretty reasonable to me. :serious:My CBR500R at close to 60 000 Km had a perfect valve check and even the spark plugs were in great shape.Replaced plug's anyway's.They said they don't see many 500's out of spec.Oh and they charged 195 tax incl.