Hi there @Zoe_Robinson 
I am sorry to say, but we don’t offer views add-ons at the moment. So, the only way to increase your views limit is to upgrade your plan.
Right now, you can benefit from our Birthday Sale and upgrade at a 33% discount!
There is no technical opportunity to upgrade with the discount in the dashboard. However, if you decide to do this, please contact our Support Team at https://help.elfsight.com/?contact=1 and they’ll be happy to assist 
Also, we have a special promo campaign that allows our users to get a 30% lifetime views increase. If you enjoy our app and leave us a review at G2.com, we’ll be happy to increase your limit up to 65000 views for Pro plan and 6500 for Basic plan!