difference between epiphone dot and casino

So I have 2 questions for you more experienced folks: 1) What are the real differences in the above mentioned guitars and 2) I have noticed on ebay and other similar sites that many used guitars I've looked at (mostly of the above mentioned models) are selling for not a whole lot less than what you could get a brand new one for.

We are learning guitar together which is fun. I have 3 Epiphones' date=' a Les Paul Studio, a Hummingbird and an EL-00 which my wife plays. So what's up with that? Why would a 5-10 year old guitar still be worth so close to a new one? I wish my cars would hold their value like that! It doesn't make sense to me but, like I said I'm new to guitars and guitar stuff. As an example I have been following used Casinos pretty closely and they tend to go for around $500 when I could get a brand new one for $600! Same goes for Sheratons and Dots, most of them selling for only $50-100 less than the cost of a brand new one. The Dot's are noticeably cheaper but I'm not sure why. Being a big Beatles fan I naturally lean towards the Casino but, except for the IBJL versions, the price range of the Sheraton, Casino & Riviera are pretty close. I am looking hard at an archtop but, other than the price which really isn't an issue, I wonder what the real difference is between the Dot, Sheraton II, Casino & the Riviera. I have 3 Epiphones, a Les Paul Studio, a Hummingbird and an EL-00 which my wife plays.

Difference between epiphone dot and casino