Can I Use My Orthoclear Aligners As Bleaching Trays?

Anyone who has used Orthoclear or Invisalign, I would like to know if I can use OTC bleaching gels in my aligners? Would a dentist or orthodontist recommend this?

Orthodontists Help? Invisalign Or Any Other Affordable Option For The Look Im Going To Achieve? Orthoclear?

I’m an 18 year old male and have been looking into Invisalign. I was told today that it would cost $7000 for me to have them done. I believe the dentist was trying to rip me off. I would need only very minor work such as closing a very small gap, a small touch up if you will. I went to see another orthodontist about 2 months ago and told me he could use OrthoClear on me for $4200. He also said the process would only take 9 months as opposed to this other lady that told me it would take a year with the $7000 invisalign. She also mentioned that some “invisible”, thin tooth colored braces were much cheaper and time would also be a year. She did not provide a price.
I’m a college student and cannot afford $7000. The $4200 is still much but more plausible. What would you recommend? The less treatment time overall is a plus but finance is the big factor.
Should I keep visiting orthodontists for consultations? I’m in southern cali in Norwalk.