For anyone interested in fountain pens but unwilling to plop down a huge amount of money, these Japanese "Preppy" pens by Platinum are pretty fun to play with. It's my first fountain pen so I can't say whether its as smooth writing as more expensive ones but for $6 I think its a great way to get started. They come in lots of colors, this is the one I got:
https://www.amazon.com/Platinum-Fountain-Cartridges-SPN-100A...