Sage advice! You can go to any coin show or shop and find all of these coins in BU for reasonable prices. Plus, you have the advantage of seeing the coins.
On line there is a web site for those. HOWEVER, since most, not all, dealers do use that as a sort of guids for prices, no price on coins is really firm. Myself, when a dealer pulls out the grey sheet for a price I usually tell them if you use that you obviously don't know how much your coins are worth and walk away. No one on Earth should really use the Red Book for prices. If they do, it should be a 3 or 4 year old version. Those prices are inflated enough to make that book fly. If a dealer pulls out the Red Book for prices, he knows you don't know prices yourself. Keep away from people like that. In the future take your time looking up prices on coins. Use the many, many coin web sites, ebay, on line dealers, etc for prices.
If a dealer picks up a redbook to price a coin for you... RUN! The redbook should be used to see how many were made, how many proof issues are made, proper weights, and to distinguish better dates from common dates but as far as pricing goes... it's very very high... or very very out of date.