This example uses FDELETE to delete an empty directory to which you have write access. If the directory is not empty, the optional SYSMSG function returns an error message stating that SAS is unable to delete the file.
Costcoâs business model is called a subscription business model â customers who want to shop at the store must buy a membership (currently $55 in the U.S.) with the promise of lower prices to make up for the initial upfront cost.
Cable DVR without subscription fees. Many cable companies now offer serviceable DVRs, but charge $10+ per month to rent them. TiVo makes a great DVR starting under $200, but the $15 monthly fees add up. New TiVos are available without subscription fees, but that adds an extra $500 cost for lifetime service. This makes economic sense only if you keep the TiVo for more than about 3 years.