got another link..
but my opinion about the title of this topic...
everything is expensive in the begin of the first stages
but if we look at the automobile industry..
a car was very expensive in the first stage and it wasn't
after the production of the Ford T-bird if I am right
the first mass production and look how much we have
gain we have so much cars and they are much cheaper.
so if they create a way to make a propulsion and other systems
which makes space access easier they will be made in mass production
and that will lead to cheaper and less expensive ways.
we want to know the same info when going to mars, moon , venus, ect
why not create a multi functional probe which does all the things
we need to garther info about the planets and moons..like make up and compositions of minerals ect.
then make them one sat/ probe which can do it all and then
make them in mass production so we can launch ten or twenty
probes to as many locations.
this way bringing down cost and so one..
so the design of the mars rovers can be used to explore the moon
only thing is another way for delivering but the rest we only have to make
some minor changes.. but it is cheaper then developing new rover designs ect.