Is it legal?

In most countries the customs regulations are not violated when you receive the medicines at your home address.

Persons are allowed to receive medicines for personal use only in most countries.
Mifepristone and Misoprostol are on the list of essential medicines of the WHO. They are not narcotics (like morphine or cocaine) or pleasure drugs (like ecstasy) or contraband or controled substance.

Misoprostol is registered in most countries and can also be used to prevent stomach ulcers.
Mifepristone is not registered in all countries but this should not be a problem because the medicines are for personal use only. Mifepristone can also be used for the cure of depression, breast cancer etc.

The possession of small quantities of Mifepristone or Misoprostol for personal use only is allowed in most countries.

Customs regulation in most countries around the world allow for people to have medicines for personal use send to them. It is not permitted to receive medicines by mail for commercial use without an import and distribution license.

Customs clearance is your responsibility: when a shipment reaches your country there is a possibility that your package may be subject to import duties. In that case you will be contacted by the courier company because import duties have to be paid before delivery of the package. If you do not pay the import duty, which varies per country, the package will be destroyed. As you are intending to use the medication for personal use only and not re-sell, this should be a rare occurrence. In addition, please note that once the goods have been dispatched to the courier company, ownership of the goods passes to you.