The total cost was for design; construction; operations, including the security around the rink; ticketing; ice maintenance, because there's a Zamboni out there all the time; programming around the rink, which was quite substantial; removal of the rink; lawn remediation; site preparation; and the relocation of the rink to a community after the fact. The grand total for the whole project was $6,950,000.
On December 4th, 2018. See this statement in context.