http://shop4.outpost.com/product/4431516#detailed $4.83 ground shipping.
There's a 716 Sata posted below but it is $131. This one:
"The PX-712SA supports 12X DVD+R and 8X DVD-R Writing; 4X DVD+RW and 4X DVD-RW Rewriting; and 16X max DVD-Reading. The DVD/CD Burner also boasts high speed 48X CD-R Writing, 24X CD-RW Rewriting, and 48X max CD-Reading."