If you buy the program and don't like it, they'll give you a refund with no questions asked. In most states, you don't have a right to a refund for a nondefective product . A merchant can escape this requirement only by posting a notice that its return policy is shorter. If the merchant doesn't post a notice, you have the full number of days to get your refund. The publisher might have a sales policy that entitles you to a refund.
Some software publishers offer their own satisfaction guarantee.
You'll see it on the box or in the manual. The guarantee applies whether you bought the product from the store or directly from the publisher. Many other publishers have an unofficial refund policy. If you call within a few days or weeks of buying the software and explain why you don't like the program and therefore want a refund, many publishers will give it to you. If the publisher gives you a full refund, that company is giving you more than it received from the retailer.