We looked into Bulgaria for last years trip, but the costs of the flights and bringing kit on the plane put us off. We drove to the alps, with a family of 4 and brought all our own skis and boards.
Last years hols was taken during half term, not booked till December, and cost us £1600 for all of us, all in. We do go self catering, but went to Switzerland.
Next year is already booked and will be the week before half term (naughty, but I did not fancy the q’s as its also half term for Paris and holland) and out apartment will be 1075 Euro in morzine. It sleeps 9, with plenty of bedrooms and bathrooms, so we will share this with some family/friends.
I’d say, if you are going with more then 2 people, drive to the alps. Especially if you bring your own kit.