dental insurance is more like a slight coupon if you need anything beyond annual cleanings.

Ink sac pens are some of the easiest to maintain because you just need to replace the sac, which are easy to get and you hardly ever need any special equipment, vs other types of fillers where you may need to get replacement parts

Nice choice, esp that cap!

My favorite pen to recommend to people who want to try vintage fountain pen is a Parker 51 aerometric because they just work and that ink sac is indestructible.

But more than enough stickers of cats to compensate!

You should!!

The same way! Not much difference in mechanics between one cartridge pen and another.

It takes some time for the ink to move through the feed. If you are impatient you can wrap the nib in a paper towel, hold on firmly, and flick it so the nib is forced through.

Here it is! It's not a special nib or anything.

This is the pouch my leek-y fountain pen came in... And what the ink looks like.
The pouch is branded Negico (Negi = green onion/leek)

There are leek pens on AliExpress but none as detailed as this one, alas.

It's from Japan. A friend helped me get it so unfortunately I'm not sure about other details.

I didn't either 😂

It's a leek with a very well controlled leak