How much one should pay for these 4 month old parts

These parts are 4 month old.

I know about used car pricing, but no idea about used computer parts.

CPU: AMD Phenom II 955 Black edition 3.2 GHZ = NewEgg Price $150
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

RAM: Kingston DDR3 PC 1600 (2x4GB modules) 8 GB = NewEgg Price $392
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

MOTHERBOARD: ASUS M4A89GTD 890 GX = $148
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Total New = $690

Thinking to get these parts if price is right. Do you see any issues with MB and RAM combo?

Thanks
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PS

I was planning to buy this and then got to know this


AMD Phenom II X6 1055T Thuban 2.8GHz 6 x 512KB L2 Cache 6MB L3 Cache Socket AM3 125W Six-Core Desktop Processor HDT55TFBGRBOX

http://www.newegg.com/Product/Prod [...] 6819103851


Mother Board

ASUS M4A88TD-V EVO/USB3 AM3 AMD 880G HDMI SATA 6Gb/s USB 3.0 ATX AMD Motherboard

http://www.newegg.com/Product/Prod [...] 4fr3x2a1ml

Memory

G.SKILL 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Dual Channel Kit Desktop Memory Model F3-10666CL8D-4GBHK

http://www.newegg.com/Product/Prod [...] 6820231189

Total Around $410 + shipping