Bulgaria is the best place to get a holiday bargain for Britons, a new survey has concluded.The study by Post Office Travel Services found that the country was the cheapest in which to pick up holiday items.A collection of ten such purchases could be had for a little over GBP42, the survey noted, less than in second-placed Thailand and third-placed South Africa, while Spain and Portugal are also in the top ten.Head of travel services Sally Munro commented: "The eurozone has taken a bashing this year but our survey suggests that tourist outlets in many resorts are taking dramatic steps to encourage tourists."Such figures may suggest that those who invest in rental tourist property in Bulgaria could enjoy healthy demand.The cost of borrowing in Bulgaria to fund a house purchase may fall as a result of an interest rate cut by the Bulgarian National Bank today.It has lowered its main rate from 3.53 per cent to 2.27 per cent.