Actually, I don't think you need to be in the US to enjoy cheaper bourbon prices.
At the higher end of the quality scale, the more expensive scotches are in the 15-21 year age range, and their price reflects this accordingly.
But because bourbon matures so much more quickly, the comparable bourbons are in the 7-14 year age range, so it follows that they're always going to be cheaper.
Elijah Craig 12yo is the best bourbon I've ever tried (please bear in mind that we don't get much of a selection here in Australia!

) but it retails for around $38. In comparison, Glenfiddich 12yo retails for $53!!! So a top-of-the-line bourbon is still markedly cheaper than a bottom-of-the-line single malt!
Cheers,
Admiral