Modern Australian X-Up is an adulteration of the Unilevel. The Modern Australian One-up, Two-Up, or Three-Up, or X-Up or any distinction of ups. There's no way to fix this irredeemable, broken and usually failed system of agreement, so any distinction of it should be avoided. It is called “pass up” sales, in other words, you actually pass up sales to your upline. In the original Australian X-Up, you would pass up your first X sales to your upline. After you passed up your first X sales, then you would collect your commissions on the following sales. After your first X sales, you would collect the commissions on the next sale. When that person made a sale, they would pass up their first X sales to you. This would go on through infinity. An Australian X-Up is always associated with a one-time sale, so there are no residuals. The income usually flows entirely from selling the one product to new people. There may be other products, but one single product accounts for 99% of the business volume.