There is a cheaper alternative to Invisalign which is impressions.
However the impressions are not as good as Invisalign but if you cannot afford to get the Invisalign done then going for the dental impressions would be the only cheaper alternative and would be better than nothing.
The monthly cost of Invisalign treatment without dental insurance is around $100.00 to $200.00 per month depending on the dentist.
Most times you'll need 3 Invisalign treatments so the cost could be between $300.00 to $600.00 for the entire treatment of Invisalign.
However it can vary in costs depending on the dentist and if you do have dental insurance the cost can be as little as $83.00 per month.
So by having dental insurance you can save on the cost of the Invisalign treatments.
Having dental insurance when possible helps cover higher dental cost treatments as well so it's well worth it to have dental insurance.