If you are in an industry where the hazards exceed the level of durability of your tablet, then in the long term, you will end up paying more. In these cases, a rugged computer is the better choice because it is designed specifically to withstand harsh challenging conditions. These are ultra-mobile, tough, and customer-engineered devices, specifically designed for use in mission-critical applications.
Of course, when purchasing a tablet, cost is an important factor to take into account. But hardware cost should not be the only number to factor into your financial considerations. The rugged ratings of a tablet will help determine how long the tablet will last, and under which conditions, so you can be sure you get the best deal possible.