Aligners aren't a miracle cure - they're a tool with clear limitations. They really do work, but only in certain cases. If you have mild crowding, small gaps, or minor tooth rotation, aligners will do the job well and faster than braces. But if the problem is more serious (like a deep or open bite, severe crowding), the pressure from aligners just won't be enough, and you'll waste your money.
Here's what a lot of people miss: aligner effectiveness depends 70% on your discipline, not just on the aligners themselves. You need to wear them 20-22 hours a day - it's not like braces that are glued on and done. If you forget about them, eat with them in, or don't wear them often enough, you won't see results. Plus you'll need to go in for check-ups throughout treatment and get new sets of aligners.
As for cost - it varies depending on how complex your case is and which clinic you go to. A full course can cost about the same as braces, or even more. Before you decide between Star Smile, Invisalign, or other brands, see an orthodontist and let them assess your situation - that way you'll know if aligners are actually right for you or if you need to go with braces instead.