Going to start clearstep! Need some help guys :)

[Ruzzzz]

Hi guys. I had my impression way back in November and wasn't sure about getting clearstep aligners. To be honest I wanted a quick fix as I have weddings in the summer but didn't no if I should take the risk. Anyhow my dentist rang up clearstep when I had my inpressions and the gave him two cases at £2450 as opposed to the 4500£ normally. It's now feb and he called them again and he said that they are still offering it to one more patient from his surgery at that price. It's such a good price with everything included except whitening. He said it included as many aligners as I need. He said its take 3 boxes with one containing 8 aligners. Do you guys think it's a good deal? Any clearstep users out there? And how long does it take to see a difference? Thank you