Randomly Generating Number (Price For House)

I'm working with a random number that generates a price for a house between 1 and 100 dollars (obviously very realistic).
Dim Housecost As Integer = (Int((100 * Rnd()) + 1))

My problem is that I put that number in the public class which does generate the number but only once. But I need the number to be re-generated every time a button is clicked. Now I would put this code snippet in the buttons Sub but there are 3 other subs in the code that call for that randomly generated number and the only way that I know of that allows all the subs to read this random number is to put it in the public class. So how do I put the number in a place where all Subs can read it and can be called to re-generate when needed?