ContentFly provides a cancel anytime subscription service with no long term contracts or commitments for our month to month plans.
Simply head here: www.contentfly.com/pricing to choose the appropriate word count you need for a given month, and then sign up to start requesting content. You can then use this word count however you'd like, divvy it up across multiple requests.
Our prices are in USD and the word quota you subscribe to doesn't rollover to the next month if there are any unused words left.
We also have a 1,500 word money-back guarantee so you can test us out. Head here to learn about our refund policy.