You can use these calculators to calculate book cost, surgery cost, taxi fares, and more..

InterShipper
InterShipper will compare all your options with 5 major carriers - for free!
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Book Cost Calculator
Retail Book Cost Calculator

Procedure / Surgery Cost Comparison Calculator | Medindia
Use this tool to compare the price of common surgical procedures in India, UK and US.

Taxi Fare Calculator for the UK
Free Calculator to work out what a taxi fare should cost before getting in. Just enter "from" and "to". Simple. Great for Airport Transfers.