I make promotional flyers for a restaurant weekly and every week there is new artwork with new photos. Websites that sell stock photos offer different licenses with different prices. I'm unclear as to which sort of license is best suited for this kind of job considering that after one week the artwork and the printed flyers end up in the garbage or recycling?
Each license has it's own set of conditions, you need to conform to all the conditions - that's it.
If you need less than the license allows on one condition (for example, usage time) that doesn't allow you to do more than is allowed in another condition.
If you are not sure e-mail the stock site and ask them.