Embodiments of a fuel pump register and register drive unit assembly having a register with pairs of oppositely facing volume and cost counters, conventional reset means for resetting the counter wheels to zero between fluid deliveries, the volume counters being mechanically indexed in a conventional manner for registering the volume amount of fuel delivered, and the cost counters being indexed by a pair of electrical stepping motors with one stepping motor connected for indexing the lowest order counter wheels of both cost counters and the second stepping motor connected for indexing the second lowest order cost counter wheels of both cost counters, the remaining higher order counter wheels of both cost counters being indexed via transfer pinions in a conventional manner.