Prices from British Pounds to US dollars fluctuates based on various economical factors. The value of a pound is more than the dollar. My advice is to watch the market before you purchase anything from FW, this way you can get the most out of your dollar. For example: A week ago the US Dollar was equal 0.62936 Pounds, and currently a dollar is equal to 0.627216 Pounds. Granted this is a minuscule amount, BUT when purchasing a large order at FW it could save you a bit of money.
Adeptus Astartes Commandments
1. Thou shalt not replace the Librarian's staff with a magic wand.
2. Though shalt not refer to thine brethren, whom the Emperor has dictated be armed with an incendiary weapon, as a "Flamer" constantly. For this has been proven to lower morale and cause strife within His Most Holy showering facilities.
3. Thou shalt not follow a Librarian around thinking, "Can you hear me now", repetitively in an attempt to drive him insane.