How low is low enough

Alot of talk on here is about how expensive
transportation costs are to space. An article today
came out on space.com (for those with subscriptions:
http://www.space.com/spacenews/launchindustry/spainsat_0916.html)
that talked about a recent launch contract for
spainsat which kinds of puts things in perspective:

"We are seeing prices of $45 million for a
4,000-kilogram satellite during this competition,
which means $11,250 per kilogram into geostationary
orbit," one industry official said. "These companies
are doing whatever they have to do to win business."

My question is this, just how low does it really have
to get to make launching no longer appear to be a
barrier?

We are talking just over $5k per pound. Compared to
the cost of manufacturing a satellite (roughly $125
mill for something the size of spainsat), the cost of
transportation is not that major of a factor. For
Spainsat is taking roughly $170 mill to deliver in
orbit, which leaves us with 26% of total costs
(45/170) is transportation.

I'd be interested to hear the ratio of transportation
of something like a car or other large ticket items
from Europe to an American dealer to compare just how
different this really is. My gut feeling is that it
is not going to be all that significantly lower.