Vintage flexible calligraphy dip nibs

I cannot begin to count the number of posts that I’ve read on the topic of dip pen nibs.
My personal interest (as with so many people) falls into the Spencerian/copperplate/ornamental basket.
I simply adore the variation of line thickness and how it combines with and compliments such a flowing script.

Of course, not every pen can facilitate the reproduction of such writing. Those that can often fetch quite the premium online (look up sale prices on Waterman Ideal and Mabie Todd Swan pens, for starters).
So what’s a person to do if they have a modest budget? What are alternatives to spending over $50?

Here’s a list that I compiled from a few different resources to get you started.
I hope to add more as I find out about them.
https://docs.google.com/spreadsheets/d/1wWj_APDjz7q1N76WZSv4KsDIdapD38mL1Exy704ayyY/edit?usp=sharing