No trusted reliable merchant will allow this. They also have to follow regulations, and for sure they won't break those rules for ya.
Not to mention that yeah, sure you may make some money by "tricking" people into signing up for a subscription, but you will get your merchant account closed.
High Chargebacks = Hurt the account, and you are bound to get a very high amount of disputes, chargebacks & refund requests. That being said, your merchant will simply close down your account as it's hurting their business.
The only way would be to find a merchant that those Free Trial Nutra CPA offers use, but I'm fairly certain that there will be a big crackdown on that too (IMO probably within the next 1-2 years, maybe 3).