I had trouble ordering online, if you do, just give them a call, you might have to leave a message but they were very quick to return my call. The man I talked to also supposedly fixed the online ordering trouble, I'll find out the next time I need to order!
I think that's a flat standard rate, I ordered 1/2lb. of decathlon with the enstar & paid $20. If this is one stop shopping for all your toxic needs, will you break out even or spend more by the time you deal with additional sources?