Integrate a Rest/JSON API - API documentation included

Hi,

We are looking for someone to integrate an API into our wordpress website, the API will be used to give pricing online for internet connections based upon UK postcode locations, bandwidth speed required (100Mbps, 500Mbps, 1GB, 10GB) and contractual term (12, 36 or 60 months) . Our suppliers API will give a price but we need this price to be increased to allow for our markup/profit. We already have the website live and we did run an API however our supplier no longer offers the API so we have had to use a different supplier hence the requirement to implement. When a quote is produced they see the pricing online and we email them the pricing also, see the example of how the pricing can look on the website and an example of the email