iPhone 4 Shattered Glass on front and back.

My screen has cracked, both front and back. I left it on the hood of my car and drove off, realized two miles down the road when it flipped off the hood, hit my windshield and then landed in the road. Nice.
Fortunately it still works, there is no injury to the LCD screen, but of course the glass is shattered front and back.

I did find a website that sells replacement front and back glass, but it would cost $150 for the front, and $100 for the back. http://www.directfix.com/category/IPHONE4.html

There is also another site that sells just the glass.
http://www.meritline.com/plastic-replacement-lcd-digitizer-touch-screen-glass-fo r-iphone-4-black---p-54421.aspx?source=fghdac&

But Ive read on the DirectFix website that you cant replace just the glass. Here is the link for that info. http://www.directfix.com/blog/category/iphone-4g-tips/

So Im not quite sure who is right here. Ive seen on ebay, them selling the glass replacements too.

I actually just ordered from ebay the glass replacements for front and back for a total of $35. I figure if it can be replaced that way, that will be cheaper. If it turns out that I was a sucker, then it looks like Im forking out the $250 to fix it. I will probably try the apple store too, to see what they say.

Has anyone had this problem yet and have tried either of the replacement parts? Any other suggestions?? Thanks!