In reply to idiotproof (Buxton MC):
Was in a similar position myself, looking for a decent (low cost) deal a few days ago. Ended up booking a seven day trip through Balkan Holidays, which totalled £632 including half board (cheap hotel), six day ski pass (Borovets), transfer and ski carriage. This seemed pretty reasonable but obviously the ski terrain quality isn't going to rival Chamonix! Not having skied for a few years I just want to get some mileage in my legs before forgetting what it's all about. That and getting to some new hills.
If you're after charging blacks all day though, don't think Bulgaria would suit you
Did a bit of net research and it's possible to ski tour to summit Musala 2925m (highest Balkan peak), as a relatively easy trip from the upper lifts so hoping to get something from the trip