jQuery - Increase a number dependent on value of another?
What I need is 'data-cost': 

    <input type="radio" class="selection" data-cost="0" value="One" name="f_1"/>

To increase depending on 'value':

    <input type="number" name="q_1" id="q_1" min="50" value="50" data-quantity="f_1" />

So for example, if the customer has between 50-100 items, the cost will be 0.53.<br>
So if `value="50"` I want `data-cost="0.53"`

and if the customer has between 100-200 items, the cost will be 0.44.<br>
So if `value="120"` I want `data-cost="0.44"`

Any help will be greatly appreciated. 

jQuery - Increase a number dependent on value of another?
===

What I need is 'data-cost': 

    <input type="radio" class="selection" data-cost="0" value="One" name="f_1"/>

To increase depending on 'value':

    <input type="number" name="q_1" id="q_1" min="50" value="50" data-quantity="f_1" />

So for example, if the customer has between 50-100 items, the cost will be 0.53.<br>
So if `value="50"` I want `data-cost="0.53"`

and if the customer has between 100-200 items, the cost will be 0.44.<br>
So if `value="120"` I want `data-cost="0.44"`

Any help will be greatly appreciated. 
