I'm charging a $2.50-$3.00 premium per eagle, depending on quantity ordered. With Silver being at 28.77, charging a total of 31.77. Plus calculating insured shipping costs as well of roughly another $2.50/single eagle. Shipping costs would be accurate and go up for actual weight, etc. using USPS.
So if you got a roll of 20, I wouldn't charge per coin for shipping, rather the exact cost to ship the roll to your zipcode.
I'm not trying to be stingy on "fee's" but would simply like to pass on the shipping charges and get the premium I originally payed per eagle.
The 1942-45 nickels would be at current market cost which can be found here:
http://www.coinflation.com/silver_coin_values.html