A couple years ago for Xmas I bought myself a bunch of brush pens to try out. I have been using a few of them consistently, but there were a couple I hadn't yet cracked open.
Recently I inked up this Dawegama fountain brush pen, a Chinese pen from what I can tell. Very cheap at less than $10.
It has a metal body and a snap on cap that, honestly, snaps very nicely. Cheaply made, the pocket clip is janky and wiggly. Which is fine for a cheapo.
It has a built in plunger feed. You dip the tip into your ink, then slide the plunger up to suck the ink into the chamber. The body screws off in a less than satisfying scratchy way. Not very precise tooling, doesn't feel like it'll ever seal quite as tightly as you'd want.
The tip is very soft and flexible with real brush fibers. But it isn't precise either. It doesn't come to a consistent point. You cannot get a consistent line. But you can get a huge range of thick to relatively thin, making it a useful wash or fill tool where precision isn't your primary concern.
One drawback is the body is thin so the ink chamber doesn't hold a lot. It holds slightly less than a more typical pen, from what I can tell. I say this because I burned through the chamber very quickly the first time I used it. Or it felt that way, anyway.
Like the Yongsheng 3009 (another cheap brush pen), this one gets a 2 star rating. Not the worst, but not great. I might go 2.5 out of 5... it does feel slightly better than the Yongsheng to me. For price, it's well worth having one just as an ink fill tool to play around with. But I don't see myself using this for any kind of profession or precise work. This is a sketching tool.
Here's my guide to brush pens, if you're interested.
