JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
It looks like the rest of your question may not have gone through completely. If you wouldn't mind letting us know the rest of your requirements, we will be happy to see what we can do. If you are looking for how to have products in addition to custom amounts the following thread has a workaround to allow for exactly that: