1) As a victim myself, I experienced how vicious they are and how they give excuses while asking for serices, the quality of service and the way they handle customers issues.
2) The price: They offers all the services at almost quarter or less price than other competetors. Even if they really give services to 1/5th of the customers they will still be at loss. Because they will be paying half or more of the money we paid in the form of vouchers, pay salary to all employees of multiple departments, rent & maintenance of building, share to sponsor etc.
3) Their scheme: They way they pushes package is not usual. If they are offering good services at reasonable prices why they have to push it so hard on people. The way they lure victims, their process, everything is same as previops travel scams happened in Qatar.
4) How Crystal Sands Tourism makes profit:
1) Most of the customers wont be using packages as they have to book flight ticket and plan other expenses and time. They will never refund money to then unless they are really troublemakers. Even for refund they wont give full money. They will pressure you to downgrade package or transfer it to someone.
2) They will never give service until you own a blogger/vlogger(another way to promote). You have to really put up some fight to get some service.
3) Even if you flight for service, they will only give hotel booking without tax. If you couldn't travel, they will mark it as service is used and they get a refund.
4) They will run away when they started getting more pressure and their monthly target is not met(they are no longer trustworthy).
5) If you paid really high amount they will give you service for a period of time so that you wont ask for refund.

If you still think they are legit, please check how gulf gate scammed and how many of them are still trying to recover money.