Infinity Terrain Challenge "How low can you go?"

I posted this terrain challenge on the Infinity terrain forum just a little bit ago.
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I was thinking about the recent thread “Terrain as a hindrance to new players?” which is about how hard it is to set up an economical table full of terrain and I was thinking that making a simple 4'x4' table full of terrain that is as economical as possible would be a good forum challenge.

If you would like to participate here are the rules:

Contest ends on the last day of November.

You must start with nothing. Not even a table surface. Pretend you are not a miniature gamer. No finished buildings or even a finished table top. No finished hills ect.

Track the cost of everything you spend putting the table together. You can use existing materials and bits if you can show the cost of those materials and bits.

Using free bits like recycled junk from packaging is perfectly acceptable and encouraged.

Use simple techniques. Please no resin casting or techniques requiring complicated tools. Exacto knives, rulers, tape, glues, paints and other easy to find and use tools are encouraged.

At the end of the challenge the table must be finished. Everything must be painted and ready to play on.

Post pics of your progress in this thread or link your progress thread or blog.

Starting Now! Good luck!

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Here is a link to my thread if you wish to participate:

http://www.infinitythegame.com/forum/showthread.php?tid=13786