And yes, I do go Queenstown to get shades.
A friend of mine once told me that the mark up for some shades are about 500% (from distributor) for high end branded ones..... I dont really care how much the RRP is, i walk in, see what i like, offer a price i feel comfortable and if they say no, i just walk off. Well, usually i cut the deal there and then and save me all the time shopping and haggling.
Be reasonable in your offer though.... If you offer $3, well, you may get the chicken rice treatment.