I did that one...still waiting on credit...GRRR...I have to take mine to the PO tomorrow...there are two bottles of things to return, so it is going to cost a couple of bucks.
Just packaged it in a padded envelope and weighed it, it is 8.0 ounces going to 90232, so for me from zip code 55024 it was $2.32 to send it back. So still a good profit...that is IF I get credit!!
I just signed up for this one earlier today and rec'd credit in about an hour. I live close to california so I don't see shipping costing me all that much.