UPDATE payment systems (paypal and PagSeguro) from my site. The systems are in place, they need to function well throughout the site. Observation.: Will be necessary to alter the area "admin" and the user area.
6 freelancers are bidding on average $298 for this job
Updating 2 payment methods throughout multiple different areas of a site is a much bigger task than you seem to be expecting but is something we could do well.