I work on them for a living so I bought Mac feeler gauges, the kind I like for most honda/acura engines are these,
http://www.mactools.com/ProductDetai...?ItemNum=FG10S

Mac makes another type that are straight and about 6-7 inches long, perfect for Vtec motors cause they kinda bent around that upper valve train oiler assembly. I didn't find them on the web site though.

I think a $100 is a good deal for a valve adjustment at the dealer if they replace the valve cover gasket. I would leave it to somebody that knows how to do it properly, it takes some experience to get the proper "feel" even with go no go gauges like the one's in the url above. I've seen plenty honda/acura's come into the shop with idle problems and dying at stop light complaints while cold after the customer tried doing the valve adjustment themselfs. 1st gen. CRV's get like this if you never adjust the valves, I guess the valve seats are pretty soft ..