Yes.. it is a good deal if he includes the CPU cooler..
If you notice, the motherboard is about 200 USD.. it's worth it if you are planning on a AMD gaming rig as well..
Is he not including RAM sticks?? it will be great if he puts those in the deal as well along with the PSU..
The processor is not very old.. its still got some life.. probably till this year end.. I'm using it myself.. just add a decent GPU and you are all set for gaming..
Remember to give it a good PSU for the good GPU..