You can get the bus from the central bus station to Pamps, and it costs 21 lv, and approx 10lv taxi from the airport to the bus station. Depending on the bus you get (some stop more than others) the journey is 4 hours to 4.5hours
Its safe. I did it last year. Just be sure to check the prices for taxi from airport to bus station in Sofia. Try to get a price before you get in one.
I did the bus run frm pamps to sofia it cost 21 lev and had 2 stops for coffe or toilet,video on board and comfortable seats when i go back i will be taken the bus again. i had a private transfer going to pamps the bus was a bit longer but much more comfortable just be sure not to take to many beers before boarding only 2 stops.The bus lets you off outside a cafe bar in pamps good food and cheap beer in there and staff very helpfull run me to my hotel for a few levs
When are you going? - we have hired a 15 seat coach going from Sofia airport to Pamporovo on 10 Jan 07, returning on the 17th. There are 10 of us so there are spare places at the moment. Not sure if you are looking for the super cheap option or not - we are paying about £50 each return, this will go down if we fill the extra seats, if this is any good to you then let me know, cheers, Matt