ReadyToShip creates invoices at the end of each calendar month.
ReadytoShip invoices and charges you directly (no charges are processed via channels like Shopify, BigCommerce etc).
If you have supplied a credit card, your card will be charged automatically. If not, you need to manually enter a credit card or pay your amount owing via PayPal (see below).
Monthly usage invoices are available in your Billing section. Payment is due within 30 days of invoice date.
To view these, go to Settings> Billing Details in ReadyToShip.
Then click on the Invoices / Payments tab
Then select the month you want to view an invoice for.
Then click 'Details' for the invoice line item, as shown:
This will load an invoice for you to pay against, as shown below :
To pay your account, go to the Payment Settings tab, use Paypal, or enter a credit card into the secure form.