Well from Blackmans they ran me almost $30. I've seen pads on Ebay for $15. Cant say for sure what they are on the net to order, might want to check
www.bikebandit.com
Also remember, the dealer wants to make $, so they will say things of this nature to generate more buisness. Its nothing new. Id take their word on the pads, but not so much on the fluid (just a guess). Still, if you want to do it, go for it. It would be good learning experience for you.
The anti vibration backing - when you take the pads off, look on the back part (metal side) for a piece of black plastic against the metal backing of the pad. Just take it off and put it on the new pads. Cant miss them, unless previous owner missed them on a prior brake job. You should be able to see them if you look at the brake pad from the exhaust side of the bike.
Honestly, once you have done this job - changing pads only takes like 10 minutes. First time, yea, take your time. But its a real quick job to do.