Here are the reasons senukex gets away with charging such an outrageously high fee per month:
1. A crew that constantly updates the engine and fixes or drops any sites that fail to work. The software could be updated multiple times per WEEK. You don't need to tweak it, the crew tweeks it for you. You don't need to buy mods or tweaks to make it work better.
2. It doesn't crash. Ever. You don't need to pay "experts" to make it work or keep it working. If it doesn't work the fault is with your windows installation or your hardware.
3. It's noob friendly. You don't need to learn it to start using it. Getting to know it better also makes you able to use it better but the point is you hit the ground running with this tool.
4. It comes with a massive amount of sites that are guaranteed to work. It comes with proxy access too. The amount of thinking and worrying associated with a legit license is minimal. No elbow grease or technical expertise required.
There already are competing products out there such as xgen, MS, UD, sick and venom. But none of them can meet and exceed all four of the above advantages though I've heard venom comes close but never used it. Venom costs more btw. Sure you'll get a few cheapskate converts but the bulk of it's serious users won't want to compromise these advantages to save a couple of bucks each month.