Electric Fireplace worth it
As others have pointed out, resale value of any particular feature depends on who you are selling to. In my mind seeing an electric fireplace would trigger the following thoughts: "Looks temporary and cheap. What other things did they skimp on? How much would it cost me to deal with these things down the road?". But obviously not everybody is like me -- other people might be thrilled to see this thing -- study your target demographic. 

Another important aspect is that making one's wife happy for