Is £850 a good price for my MBP?

[AFK_Matrix]

Hi,

Hope this is ok to post this here. Basically I have had an offer of £850 for my MBP and I am not sure if this is acceptable or not. So i thought I would ask you most knowledable people here

I bought this in August 2007 with 3 years Applecare as well.

Here is the spec:

All aluminium body
Intel Core 2 Duo 2.4 GHZ processor with 4mb of L2 Cache
2GB of memory
17" glossy screen (1920 x 1200)
Geforce 8600M GT
Superdrive
160GB Sata HDD
Magsafe power pack
Airline Power Adapter
Tiger or Leopard OSX

Thanks.