I went into my local West Marine store today to pick up some Amsteel that I ordered. One of the guys there asked me what I was doing with it so I told him it was for a hammock. One of the other guys said "Yeah we've had a number of guys come in and buy amsteel. There is some online forum about it."
So I told him he'd probably get more business from Hammock Forums if their price was as low as Redden's - lots of folks on the forum order theirs online. His response was "Well post online that we do price matching. We'll look it up on their website and will match their advertised price."
I'd always rather support a local business and its even better if the price is the same. If you live close to a West, then consider patronizing your local store. But call first - my local store doesn't carry the amsteel, they have to order it from their warehouse.