I used this as my template:
DIY Stands Template and Calculator - Reef Central Online Community
As far as pricing goes:
Not sure exactly how many 2"x4"x8' I used but lets say 10 (way more than I used)..
2x4x8' x 10 = $2.76ea $27.60 total
1 sheet of wainscot = ~$20, you could use 1/4" birch to wrap for even cheaper
1 - 4'x8' sheet of 3/4" plywood - $30
Misc Trim (baseboard and casing (top)) - $15
So right around $100, plus or minus. I had screws, stain and poly laying around from another job.
Here's a few pics:
I have since put a curtain up across the front to hide the equipment under it.