Is this a good deal or was I suckered?
...just for the rest of your life!!! Welcome to the sport of R/C airplanes, where $100 is just the beginning.......
Since it sounds as though this is your first plane, it would be wise to get some in-person help from someone that has been flying for a while. If you have a local hobby shop or club contact them, and see if there is someone willing to help out a newbee--there usually is, we're very friendly people

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Getting help will make all the difference in how your first build and flying goes, allowing you to build your skills much more rapidly (and cheaply!) than if you try to go it alone. Attempting a solo build and flight of this plane will lead to a very short R/C career and a lot of dissapointment.
Incidentally, what is the maker of the plane? The size? Given a few more details we may be able to offer some advice, however NOTHING can take the place of a live, skilled instructor.
And welcome, and Good Luck!!!!!