Clear aligners have come a long way. While the easiest and most successful cases are those with smaller movements, larger movements and more complicated cases are becoming increasingly achievable. While traditional braces will get you where you want to be quicker, I think that you could definitely get good results using Invisalign or Clear Correct. It's tough to know exactly without a more thorough examination (radiographs etc.), but I would estimate a two year timeframe. Prices range depending on your geographical location and complexity of the case. I'd say 5,000-6,000 but that's an approximation. Your best bet is to have a consultation with an Invisalign or Clear Correct provider and you can get more tailored information from there. :)