Yeah, I remember seeing that Amazon was putting small percentage off items to make sure they dropped below free shipping charges as well. Basically if it was going to cost them $5 to ship it, and it was only $3 over, they'd give you $3.01 off in a sale to get it under.
Edit: The Converse website isn't as scummy as Journeys, I ordered from them. They had 15% of your first order. With rainbow laces it came to $70.72 shipped.
Nope, no option for that. I messed with the site for a decent amount of time to see if I could work the discount to my advantage before jumping to the actual Converse site.