Man I am glad you asked this question Glen leads directly into a number of really interesting observations.
Do you know I am still using refills for Slimlines I have had since the 80,s when I bought a large number of the Cross type pens, two to three hundred extra brasses. As a busy user of these refills I have never had anyone rush back to me with any form of complaint re short run or innefficient refills.
I like the fine line from these refills and longevity.
Of course I have never measured how many miles, kilometres they write.
Picture this the original ones ie the complete pen cost me less than a dollar the brass and spare refills were very cheap, had to be else it would have been cheaper to buy a full kit for less.
How much do you pay for Phil,s Beaufort refills what is the added cost from anyone indeed to replace the one in the kit and put a spare in with the finished pen.
I dare say they are good will in marketing, impressive to use.
Now do a comparison with Ink purchases for fountain pens, I do hope ink is marketed more economically in the UK than it is over here, how many makers include a bottle of ink with their finished pen.
Let me be straight up I admire the application Phil has made when choosing refills etc, details of the pen kits he sells. Tyranny of distance dictates purchase choices from our Island.
I try to support as many people I can from here and suggest looking for quality. I am grateful for the technical explanations held on Beauforts web site, for information and reassurance not found easily here. Yes I would head for him for
refills as a first priority in the UK.
Peter.