Is COBRA worth it after a layoff? after 12 years as a customer-service rep

The COBRA quote for my family is $500 a month and I do not know how to afford it. I have read a lot of threads here and could not find my exact situation. I saw that marketplace plans might cost less. How did you decide?

Thanks for writing this out. I went through something close to it last year, and it settled down once I kept a simple log of every call and form.