My ears are burning !

Good first place to start is the e book at http://www.coinfirm.org/, written by Elianite, gives you a good overview of the different Casascius coins. Well worth a read
(Elianite is also about to publish a book of all crypto coins https://bitcointalk.org/index.php?topic=1022071.0;all - free plug ! )

Casascius Silver ANACS 2013 MS-64 Bit coin 0.1 BTC Loaded - 500. So thats 1.2 ish
Casascius Silver ANACS 2013 MS-67 Bit coin 0.1 BTC Loaded - 675. This is 1.6 ish

I currently have the following 0.1 coins listed @ https://bitcointalk.org/index.php?topic=1364089.msg13876780#msg13876780
MS69 @ 1.9, MS68 @ 1.5, MS67 @ 1.4
(as well as many others)

So those prices arent a million miles away, but I can beat the 67 price !! Including delivery from the UK.

Feel free to PM me about any of the coins in my sales thread, or if you just need a steer (if you are looking at someone elses coins here), happy to help

Plenty of folks who can help you - TookDK, Blazed, bithalo, Mitchełł, Eodguy149 etc etc many others. Just look at the thread for Elianites book, and you will see most of the physical crypto collectors. They are a friendly bunch, and will help.