Is Fooman Connect: Xero right for my store?

Xero itself is designed to support volumes of up to 1,000 sales invoices and 1,000 purchases/bills per month.

Like Xero, Fooman Connect is optimised for small to medium sized online stores. Transfers from your Magento store to Xero are additionally subject to Xero's limit of 60 requests per minute. As this limit comes from Xero directly, it's not specific to Fooman Connect and also applies to other Magento-Xero integrators.