Anyway further to my original question, how many fags can you bring back to the UK, for EU countries it's 3200 but I'm not sure how much EU membership Bulgaria has for this area.
As Bulgaria is an EU country one presumes the same allowance would apply. Many places will take euro but you will be nailed on the rate - exchange offices abound so just take sterling. Cigarettes have become significantly more expensive since accession because of EU duty levels and are I think nearer 5 leva.