Because you mentioned...
"the prices on... is FREAKING ME OUT."
The best fake plants I came across were the silk type. And yes, you can make a very gorgeous tank with these.
But, here's the but's...
They are not anywhere close to cheap.
When I used to do fake plants. It would but like 2 or 3 of the small size. a couple of each of the two med. size, and a large. Just to make a real looking nice big plant. So thats around 50 bucks for one cool looking plant. Then I'd need to do this 3 or 4 more times to fill a 55. Plus around 10 more various others. Easily another 100 bucks.
Thats easily a quick 200 spent on the low end, for a gorgeous fake plant tank. But more like 275-300 for what I mentioned.
Then you'll want to put whatever was spent this time, into your budget to do it over and over every 6 months. Algae isn't the easiest thing to clean off of a silk plant. And with just normal cleaning they'll end up fraying with in a couple of months, etc, etc.
Example of a "cheaper" plastic plant...
http://www.drsfostersmith.com/product/prod_display.cfm?c=3578+20750+7393+19771&pcatid=19771
2 x 18" = 2x 5.99 = 11.98
2 x 15" = 2x 4.99 = 9.98
3 x 12" = 3x 3.99 = 11.97
1 x 9" = 1x 2.99 = 2.99
3 x 6" = 3x 1.99 = 5.97
--------------------
1 Georgous plant = $42.98
I'm still very new to real plants. But I plan on figuring them out, way before I'll ever buy another plastic plant.
The 55g in my sig was my first real attempt with live plants.(tank broke not long after I got started with the live plants). I think it's kinda sorta leaning towards georgous. That what I had in mind for it's future anyway.
That's prob around 50 bucks worth of live plants. But would prob cost over 200 for fakes, that would need replaced in a few months.
Like I said at the start, just wanted to toss out some "Cost" thoughts.