*handwobble* Consensus in Pen Fandom is that over ~£300 you're paying for the art/portable sculpture rather than any improvements in function. Up to the £300 mark, there's lots Stuff that some people consider worthwhile and others emphatically do not: filling system (cartridge only? convertor? one of the other filling systems that give you a higher ink capacity but makes it harder to change colour?), how well the cap seals (how long can you leave the pen unused before it won't Just Write when you pick it up?), durability and comfort (balance, weight, length of section, diameter, ... all have more choice in more expensive pens) and, of course, The Nib (where more expensive nibs come in a greater variety of grinds for a greater variety of lines, are generally smoother to write with, sometimes have some amount of line variation, ...).
So. For most people, for most purposes, not... really? I do find the sensory experience of using my more expensive pens much nicer than that of using my few-quid-from-WHSmith pen (more comfortable to hold, much smoother nibs to write with, less prone to breaking because I am clumsy) but this is something that is of subjective value only. :-p
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*handwobble* Consensus in Pen Fandom is that over ~£300 you're paying for the art/portable sculpture rather than any improvements in function. Up to the £300 mark, there's lots Stuff that some people consider worthwhile and others emphatically do not: filling system (cartridge only? convertor? one of the other filling systems that give you a higher ink capacity but makes it harder to change colour?), how well the cap seals (how long can you leave the pen unused before it won't Just Write when you pick it up?), durability and comfort (balance, weight, length of section, diameter, ... all have more choice in more expensive pens) and, of course, The Nib (where more expensive nibs come in a greater variety of grinds for a greater variety of lines, are generally smoother to write with, sometimes have some amount of line variation, ...).
So. For most people, for most purposes, not... really? I do find the sensory experience of using my more expensive pens much nicer than that of using my few-quid-from-WHSmith pen (more comfortable to hold, much smoother nibs to write with, less prone to breaking because I am clumsy) but this is something that is of subjective value only. :-p