I've been using the CCNow thing, and so far it's worked fine, but....I'm seriously considering doing the money order thing. I want Beth to have as much profit as possible, and if it's sent to the Lab under certified mail, you'll know that it was delivered and a real person picked it up, etc.
Unlike so many others on here, I really haven't ever had any significant problems with the USPS. And I'm absolutely fine with waiting for my stuff...I order every two weeks anyway, so I always have something coming in.
Again, I want Beth to get as much profit as she can.