Is it the Sony VG with the A900, or a 3rd party one? If the latter, the A900 is overpriced (unless from a shop in ex condition, low shutter count and good warranty)
I paid £630 (collected) a few weeks ago for my second A900, inc a 3rd party grip & 3 batteries!
If you can get one for a better price, the A900 is a great camera - but it doesn't have video, live view, etc. Central AF is good (particularly with fast lenses), outer points less so but still OK.