[ice799]

I tried with a FF3 on OSX and then in a VM with IE8 - got two different prices.

[noaharc]

Probably the User Agent doesn't really matter if they are bucket testing prices (or if it's glitching).

[aneesh]

A good A/B test is often "sticky" (usually using cookies); once you're in a certain bucket, you stay in that bucket. So a different browser could conceivably make a difference.