Minibus - The cheapest way to get to Primorsko is by taking a minibus with other people from the bus station in Burgas further North up the coast. Burgas is easily reachable from anywhere in Bulgaria or surrounding countries by air, rail or bus.
Taxi - A taxi from Burgas to Primorsko will be quite expensive if you choose the wrong taxi as the drivers sometimes think it would be a good idea to overcharge you for the journey with a meter that increases in price at a very fast rate indeed! Be sure to negotiate a price before you get into the taxi and if there are a number of taxis then don't be afraid to get them into a price war with each other to see who will offer the lowest cost for a journey.