The biggest advantage of Virtual Envelopes is that your money is safe in a banking institution instead of cash in envelopes in your house. Just imagine if you hade robbery, fire, or just plain old forgot where you put that cash envelope with your rent payment. Not a fun time trying to recover that!
You can easily create your own budgeting worksheets by accessing free worksheets online and then customizing them to your specific needs. This is one area where you definitely don't need to pay money unless, of course, they come with a software program you purchase. However, if you just want to make a list of your income and expenses that you will use to create a budget then you can find plenty of free examples online.