Exactly Zero. $535 million doesn't even pay for the body of the satellite, not to mention the payload. And while we are on the subject of satellite expenditures, the GOES-R project (the next generation of GOES satellites) is still going on (at a reported cost of around 7.6 Billion).
Plus, GOES-14 has been activated and notices have gone out for all receivers to re-train their dishes to it's location and GOES-15 is picking up the slack that 14 is missing. The GOES network of satellites was built to be slightly redundant in the case of craft failure.