Bathroom packages can start around £1,500, although the average fitted bathroom today costs £3,000. Luxury bathroom packages can be tens of thousands of pounds.A shower is an integral part of any bathroom. The choice of showers today is vast – from standard electric showers, right up to power showers.ompare My Local... Buying and installing a new fitted bathroom can make a fantastic change to your property. Not only will it add value, but it will also make your bathroom a more relaxing space to be in.