Historical new car prices by year

Is there source on such information? For example, how much did a new Honda civic with standard features cost in 1993? 1994? 1995? 1996?

Find a Car and Driver with what ever car you are looking for is tested. they give you more info than you would need.

“Standard Catalog of American Cars” should be present in your local bookstore last I checked. Your local library may have it.
There’s another publication by the same folks for imports.

There are quite a few on this site: http://www.thepeoplehistory.com/40scars.html
That page is for the forties, but if you look on the left side there are links to other decades.