I bought a Nikon D50 for £90, bolted a very 'cosmetically challenged'
second hand Nikon 80-200 AF-S onto it (£450), went to the Festival of Speed and was contacted by two car manufacturers who wanted to use my pics/offer me work afterwards.
£540 and I had a magnificent set-up, sure the AF may not have been as quick as newer models, fps was slow, and the focus points were very few and all near the middle...but 3 years of motorsport practice with a bridge camera had put me in a good position to really get the most out of my 'new' equipment (and motorsport is supposed to be at the higher end of photography, cost wise)
I personally put it at 90% lens, 10% body, every client I've had isn't nearly as fussy to a pixel peeping level as the vast majority of forum dwellers, nobody ever complained at 6mp images (and horror of horrors, I shot JPEG)