  Prior information about the input state can be utilized to enhance the
efficiency of quantum teleportation which we quantify using the first two
moments of fidelity. The input knowledge is introduced by relaxing the
uniformity assumption in the distribution of the input state and considering
non-uniform distributions, namely the polar cap and von Mises-Fisher densities.
For these distributions,we show that the average fidelity increases while the
deviation decreases with the increase of information content about the input
ensemble thereby establishing its role as a resource. Our comparative study
between these two distributions reveals that for the same amount of information
content about inputs, although the average fidelity yield is the same for both,
the polar cap distribution is "better" as it offers a smaller deviation.
Moreover, we contrast the resource of prior information with other resources
involved in the protocol like shared entanglement and classical communication.
Specifically, we observe that unlike uniform distribution, the amount of
classical communication required to fulfill the task decreases with the
increase of information available for inputs. We also investigate the role of
prior information in higher (three) dimensional teleportation and report the
signatures of dimensional advantage in prior information-based teleportation.
