How much is this mITX PC worth?

[Mj19]

It comes in the SilverStone Sugo SG05BB-450-USB3.0 case

MSI B75IA-E33 (MS-7733) Motherboard
Intel Core i7-3770 3.4GHz Processor, stock CPU cooler
Corsair Vengeance LP CM3B8G2C1600L9L 2x8GB RAM
ASUS GeForce nVidia GTX 970 4GB DC Mini
Samsung 840 Pro 128GB SSD
Seagate Barracuda 500GB HDD
Silverstone SFX 80+ Bronze 450W PSU

Monitor: Iiyama Prolite E2483HS-B1 1080P 24" Monitor

Also, what CPU cooler would you recommend for it? Ideally one without a backplate?

 

[Gavian PC]

$450 to $500