Is this a good deal for a Mac Pro 2008?

Hi guys,
I joined to get some advice, specifically on whether I should purchase a Mac Pro 2008 and figured this thread will be able to give me your experienced perspectives:

SPECS:
Mac Pro 3,1 (2008) 2x2.8Ghz Quad-Core (Total - 8 Cores)
16GB Ram
1TB HD
Running OSX El-Capitan
ATI Radeon XT2600 256MB Video Card

PRICE:

$550 which includes a 23in Apple Cinema Display (the thicker, older, aluminum one)

USE:

I am considering it as my 2007 iMac died on me a week ago. Will be used as a family...

Is this a good deal for a Mac Pro 2008?