shipping heavy amps - Canada to US?


What is the safest, easiest, and most reasonably priced method of shipping a pair of used, heavy (about 100# each) monoblocks from Canada to the US? I would really like recommendations on shipping them, but assuming the owner could drive them over the border, does anyone know what the owner would have to pay to cross over with them? Thanks.
mitch2
The other consideration is the country of origin of the amps. If they were made in Canada or the U.S., or another country covered by the Nafta agreement, you won't be stuck with an import duty but if they're from somewhere else, you will. I learned that the hard way when I bought some English-made speakers from someone in Canada.
try Bax Global. They do not pick up at residences but your seller could probably drop it off at their airport location and of course you would need to have access to a Bax depot within a reasonable driving distance from your home...

Fed Ex ground is not Fed Ex - its sub-contracted so don't assume you are getting "Fed Ex" service. An alternate choice would be DHL. I heard from someone they had good success (and I don't mean necessarily cheap) but the package was handled professionally with accurate documentation and reasonable brokerage fees. Again this is just what I was told.
A must is to drive them over the border, then use ups ground, fully insured, double boxed. FedEx ground while a little cheaper, their insurance process sucks, with them not paying 95% of the time.
Thanks again everyone. The seller and I are currently exploring options that might be a win/win for both of us. I did receive a much better response when I called BAX today, compared to the information I was given on the website. On the website, it wouldn't give me a rate for their saver shipping, but when I called they were very helpful with that and in discussing brokerage. I agree with all who said it is easier to drive it across, based on my previous experiences. Too bad, this should be much easier.