assuming your aetna plan is one you buy on your own (rather than one you get at work) you can absolutely shop for another plan and you should to make sure you're getting the best deal. there will be new options available to you particularly since insurers can no longer deny anyone or charge them more for a pre-existing health condition. and depending on your income you may qualify for a subsidy to lower your costs.
i am currently enrolled in an aetna plan and pay approx. $1 300 a month for coverage. . can i apply for another plan under another healthcare company through the marketplace?