Taps – bathroom fitting is mainly taps – hot & cold taps, shower or hand shower & all fittings for the basin.
Brands – There are many branded companies like Jaquar, Marc, Blues. CP fitting is available in Hindware, Parryware. CP fitting (taps) which are chrome platted. These are costly as they are branded.
Prices are pretty much same across different parts of India, since there is a well organised price list. Hence you wont find much difference in price for same model of Tap or shower in Pune or Bangalore or Mumbai.
In local or non branded products there is variation in price list – it depends from city to city & state taxes.