This case contains a good summary of the many ways the courts have calculated damages when a vendor refuses to close, essentially confirming that it is a very fluid process that isn’t always easy to predict.
Tega Homes (Attika) Inc. v. Spencedale Properties Limited et. al., 2022 ONSC 75 (CanLII)
https://www.canlii.org/en/on/onsc/doc/2022/2022onsc75/2022onsc75.html