Sure, I'd be happy to.
I started by getting some acrylic from Lowes; a 4x2 sheet 0.22" thick is about $40. They can cut the sheets at the store and I ended up with:
2 - 24"x24" - sides
2 - 4"x48" - the border for the door
1 - 16"x48" - the door
1 - 24"x48" - back
1 - 24"x47.5" - bottom
I also bought some thinner acrylic to act as a 4" border around the top for added stability.
Then I ordered some cement/weld from TAP plastics as well as acrylic hinges, knobs, and clasps. The clasps are strong enough for dragons and the like,
but couldn't hold anything larger, like monitors or snakes.
http://www.tapplastics.com/shop/product.php?pid=465&
They have a good video explaining how to weld acrylic.
First I taped the pieces in their place.
Then I welded them and removed the covers.
Next, I used some black insulation foam (which is spendy) and tube mortar for the first layer. This isn't necessary, but I didn't want the yellow foam showing on the sides because I think it looks bad.
I finished the landscape with yellow Great Stuff (very cheap at Home Depot). I carved that with a utility knife.
I mixed Exo Terra red sand and Eco Earth and attached that with silicone. Make sure you use strong silicone, because my dragons have managed to damage the cheaper stuff I used. Silicone 2 is good stuff.
I filled the pits with Exo Terra Turtle Gravel (large enough to not be eaten accidently). The long pit is meant to look like a dry river bed. The others were used for planting. The plants I used were thornless prickly pear, geraniums (which were promptly destroyed by the dragons), cissus quadrangularis vines (a succulent vine), and a bursera/elephant tree. I got these from doleaf.com and ebay. I let them grow out for a couple of weeks prior to planting in the viv. For planting, I used the gravel in the bottom, then a layer a good organic soil, and then sand a eco earth mixed for the top. The plants, minus the geraniums, are growing well so far. All are drought tolerant plants, to keep humidity down, that I found on Melissa Kaplan's website
http://www.anapsid.org. She has a good list of reptile safe plants. I have a 4' fluorescent fixture from Lowes, very cheap, with two 6500k lights. That rests on the cage. My two mercury vapor lights are suspended by Zoo med's lamp stands. I use an Exo terra solar glo on the left and a trex on the right. The temps on the left basking spot sit between 110-115 and the ones on the right at 100-105. The ambient air temp sits at 80-85 during the day. I made sure to provide two hides, one is the cave in the cliffside, then other is the hollow log. The dragons took a little bit to adapt, but seem to be doing better than I've ever seen them before. All in all, it cost about $300. You could, for price and stability, use melamine for the bottom and back. But, this would require a drill bit that can drill acrylic without cracking it and some acrylic screws. It may also be easier and cheaper to use flat sheets of insulation foam as your main structure and just use Great Stuff to attach, fill and give it a natural shape.
The final product: