I've been looking around a bit for an '04 Disco, and came across this one:
2004 Land Rover Discovery, $7,995 - Cars.com

I have included a pic, as it looks like some warning lights on. I can't tell because of the smallness of the pic, but is this the three amigo's?

 

That photo shows the "service engine soon" lamp, not the 3amigos. This indicates a code in the Engine computer which could mean something minor or extensive. I would suggest an independant inspection and have the code read before making an offer on the vehicle.

 

Pretty cheap for an 04, if you are interested make sure you have a Rover shop do a pre-purchase inspection first.

 

If the service engine soon is on,and I see another light down and left of that one on, I will prob. pass on it. I'd rather spend a little more and get something that dosen't need any(or maybe less) work on it.

 

...X2

 

or buy my cheaper 2000 :+)