Hello, Different caps/crowns are available for a root canal treated tooth depending on the type of tooth and the material being used to make the cap. For a front tooth,an all-ceramic/zircornia cap is advisable which can cost anywhere between 3-10k depending on the quality of the material bring used. Looks/aesthetics are of prime importance in these caps or crowns. For teeth at the back a PFM(metal cap on which layer of ceramic is put) is advisable. This would cost around 1500-3000 per crown. Strength to withstand the chewing forces is of more importance when making a crown for posterior teeth. Regards