The Colorado Supreme Court has held that the traditional rule against perpetuities does not invalid an option, even if it has no time limit, if it can be canceled at any time before its exercise, at least where the price for the option is set at the market value of the property and it was agreed to by sophisticated parties. Atlantic Richfield Co. v. Whiting Oil & Gas Corp., 320 P.3d 1179 (Colo. 2014). The court reasoned that what mattered was not the lack of time limitation but whether the option imposed an unreasonable restraint on alienation and concluded that it did not under these circumstances.