Custom Recurring Donations

I have created a one time donation form for my organization, but I also want to give them the option to do recurring donations. I've attached a screenshot of what the form looks like. Since it is donations, the user needs to have the ability to determine their own amount. Is there a way to have a form that is recurring like a subscription, but doesn't have a set "price" for the user?

Unfortunately recurring donation is not possible at this time. The only option that has a recurring charge is the "Sell Subscription" payment type. So your requirement to have a custom box that repeats the payment monthly is not yet possible.