Paycentre agents can also swap their mPOS for the big POS by visiting Paycentre offices across the country. They can also reach out through a PayCentre verified Ambassador to get collect a big POS at a registration rate of ₦25,000 for new agents and ₦20,000 for existing Paycentre agents that want to swap their mPOS for the big POS There is a monthly maintenance fee of 1,000 Naira when you swapped mPOS to the Big POS.