1 PADI certification courses will cost you $300-$400 and the training will usually last from 2-4 days. 2  The participants will be in small numbers, such as 8 people or less, to ensure quality training. 3  According to the site ScubaMarcos.com, the price for the scuba classes can range anywhere from $350 to $450.
World Ventures is an illegal pyramid scheme. The company World Ventures markets memberships in a travel club that will provide discounts on vacation accommodation throughout the world. These holiday are sold through the company Rovia. World Ventures also offers these memberships to sales representatives.
A Ponzi scheme is a variation of illegal pyramid sales schemes. In a pyramid sales plan, a person pays a fee to become a distributor. Once the person becomes a distributor, he receives commissions not only for the products he sells but also for products sold by individuals that he brings into the business.