Don't understand your negotiated prices apply to my shipments? I noticed that user is requested to create account at respective carrier. Could not use it since the server ajax is not responding.
PS -
Request URL:https://goshippo.com/wp-admin/admin-ajax.php?from-dd=Orange%...
Request Method:GET
Status Code:500 Internal Server Error
Going forward all merchants have to consider the Groupon/GOOG Offer cost while pricing. They already factor in credit processing - and can't discriminate on Cash customers. eventually a customer paying cash and not using any promos will pay a lot more for the same merchandise.