1. A method comprising: receiving a request to instantiate a virtual machine in a cloud; determining a specification for resources to instantiate the virtual machine in view of a type of the virtual machine; receiving, by a processor, a value offered for the resources to instantiate the type of the virtual machine, wherein the specification for resources to instantiate the type of the virtual machine defines at least one of an amount of memory, an amount of computing cycles, an amount of communications bandwidth, an amount of storage, or software resources for the type of the virtual machine; receiving, by the processor, a plurality of specifications for resources that are offered by a respective plurality of computing systems; determining a value for at least one specification of the plurality of specifications for resources that are offered by the respective plurality of computing systems in view of an amount of time for providing the resources to instantiate the virtual machine and in view of a comparison with other values for resources of other clouds; and matching, by the processor, the specification for the resources to instantiate the type of the virtual machine and the value offered for the resources to instantiate the type of the virtual machine with at least one specification for resources offered of the plurality of specifications for resources offered and the value determined for the at least one specification for resources that are offered.