The focus of this paper is to reduce the cost of RFID systems when the full blown model of RFID is not cost effective. The question of low cost approach comes into picture when we are more concerned with using this technique as a simple identity information collector, and embedding it into the existing IT system with minimum disruption. Our proposed scheme is an enhanced anti-collision scheme which not only claims but also proves that cost involved in RFID tag collision can be reduced and also the throughput can be increased by adopting the so designed model of communication. The model is basically the combination of slotted aloha and two time scale SPSA. Finally the mathematical results have been obtained by programmatically simulating the above designed model.