Yes you can,
Just note that you'll have to pay for the full price of the higher program.
We don't have a "pay the difference" to upgrade type of set up.
So example, if you bought the builder level for $200
And now you want to upgrade to Super Affiliate, you'll need to pay the full super affiliate program price of $597
The $200 you paid for the builder does not get applied to the higher program.
But the opposite it true, if you buy a higher program, all the lower level programs will be included for you.
Example, if you come in at Leader, you'll automatically get Super Affiliate and Builder levels included.