I haven't seen Bob's most recent book. I still want to. There are many caveats to using a book for pricing. However, I still am glad I had my older edition.
This is the point where you need to cover your eyes
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spoiler alert
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Yes, watching trends on ebay is the best way I can think of for setting prices. If you're selling at shows, I hear some things may be priced differently. Or if you're selling in a shop, maybe you can mark them higher and wait for the right customer. Still, for a good pricing rule of thumb I recommend watching ebay. You could post pictures and some might be willing to give estimates. A lot of people avoid talking price though.
Where do you plan to sell them?