All use of authenticated ESI is subject to the terms of the Developer License.
To use authenticated ESI, you will need to enable your account on the developer site. You must have paid for eve at some point in the past and you will need to agree to the Developer License.
1) Can I charge people real life money for my application? A) No.
2) Can I charge people ISK (the in-game currency) for access to my application? A) Yes.
4) Am I allowed to collect donations from users of my application? A) Yes, as long as they are purely voluntary. “Donations” may not be mandatory, and you cannot require a donation to unlock premium access or special items.