I think that it might've been easy to miss that the offer was in Canadian Dollars, since people are so used to selling in the US here. It looks like $5000 CAD comes out to under $4000 USD, which is far more reasonable than a first glance might suggest.
Sorry that you didn't have a great experience on the site,
@
josh_is_great
. Best of luck in finding an interested buyer for your collection.