How reputable is SentryMarketing? I've attempted to apply for a couple of their shops but have been unable to start the certification process that they require for each shop. I've written to them several times addressing this issue, but have had not response.
I expect you'll be getting a response soon from Dave at Sentry. He monitors the forum regularly. He freely gives out his email, so when he does, let him know what the problem is and he'll get back to you promptly. I'd give it, but I'm not sure we're allowed to post email addresses or not. :}