SiteGround has three plans and everyone can sign for any of them with a great discount through your affiliate link. It is also good to make a recommendation for the most appropriate plan to your audience:
Clients can choose to buy a new domain, or sign up with an existing domain. We offer a wide range of domain extensions at awesome prices.
Unlike many other hosting providers, our advertised discount applies to any of the initial periods chosen during the sign up process. Being able to get the low price for the one year period is a fact that increases conversions greatly in comparison to other providers where the lowest monthly price applies only for the longest period. So highlighting this fact may strongly increase your conversions.