Systems, apparatuses and methods for optionally replaying portions of gaming grids

Systems, apparatuses and methods for facilitating replay of a subset of a game play grid. In the context of a slot game, a player is allowed to respin a reel(s) in an effort to improve the gaming activity result. The respin cost may be calculated by determining estimated values for each distinct symbol type on the reel providing the replacement symbols, and determining a total estimated value for all symbol types, rather than cycling through all permutations of symbol combinations resulting from the state of the slot grid and the replacement reel.