An upgrade is recommended, if the upgrade price would be less than the cost of buying extra respondent and/or email packs. In order to know whether you should upgrade or not, you need to know approximately how many extra respondents and emails you will use for the remainder of your subscription period. Then you can calculate which subscription fits your needs, using the calculator on our pricing page. Or just send us an email so we can help you out with that.
Bear in mind that after an upgrade or purchase of extra packages, the end date of your subscription remains unchanged and that the remaining volumes are not transferred to a new subscription year.
When you upgrade your subscription, you only pay the difference between the old and the new subscription price.