For a much cheaper alternative, search for "Bonkote flux Pen"s on ebay or aliexpress. They are almost identical to pentels, including the regulator tube, and can be found for 1-2$. The bristols are a bit finer and softer.
Another option are water brushes. Those dont come with a regulator and thus aren't "pocket safe", but on the other hand, you can squeeze them a bit to quickly lay down a lot of ink. the little cylindrical ones, coming in packs of three for around 1.50-1.99$ have surprisingly good brushes. nice firm springyness and very juicy flow, due to the thincker bristols.
PS: Tinker with them a bit, many parts are interchangable.
For a much cheaper alternative, search for "Bonkote flux Pen"s on ebay or aliexpress. They are almost identical to pentels, including the regulator tube, and can be found for 1-2$. The bristols are a bit finer and softer.
Another option are water brushes. Those dont come with a regulator and thus aren't "pocket safe", but on the other hand, you can squeeze them a bit to quickly lay down a lot of ink. the little cylindrical ones, coming in packs of three for around 1.50-1.99$ have surprisingly good brushes. nice firm springyness and very juicy flow, due to the thincker bristols.
PS: Tinker with them a bit, many parts are interchangable.