We accept all major credit cards and Paypal. Bank wire transfers are also accepted for quarterly and yearly plans.
The trial fee is not refundable and if the trial expires and you haven't cancelled it you will be automatically charged.
You can upgrade, downgrade or cancel your account at anytime but there is no refund or credit for unused days.
To prevent abuse, trial users are limited to 100000 data points and 100 requests for data.