The Best and least expensive are at Need - An - Article. Fees are $10.00 a month to join and $16.00 for a press release. I get one a week. They're great and I always get results. And no --- I get nothing out of this. I'm a webmaster only....I buy
Can you point us to a sample you've released from them. I run a PR firm, and have very rarely seen anyone article-focused who can write a remotely decent press release. I'd love to look at one and give you some feedback on it if you're open to it. Also, what do "results" mean to you? How many relevant media outlets (and of what caliber) took the release and crafted a unique story from it? Did you get interviews out of it? Just blog pickups? Are you considering simply backlinks to be good results? etc.