I feel positively evangelical about this pen, which I think is unknown and underrated. At under $3 per pen when you buy a pack of 6, they're cheap enough to stash everywhere. I keep them at the office, in the car, in the kitchen, because at that price point I can afford to misplace them as often as I do.
I've been able to buy these locally as single pens (I live in Minneapolis) but I've only found the 6-pack online via Amazon. There are colors I'm less fond of than others - I find I almost never need to write in purple - but even the less loved colors get used as for quick jottings around the house.
The pen I'm using here is a 1mm. You'll see you can get some line variation, though not a ton. For me, it's just enough variation to make my writing look a little nicer while not being such a prominent italic tip that I feel like I need to slow down to write with it. The pens also come in 2mm and 3mm sizes. I've used the 2mm, but I just find it a little too thick for daily writing.
If you're looking for a cheap way to see if you'd like to write regularly with an italic point, this is probably your best bet. The chisel tip doesn't get soft and spread out like many, many other markers I've owned, and the colors look vibrant on every type of paper I've thrown at it.
The Sakura Pigma Calligrapher is available in packs of 6 at Amazon.