Depends on when and where you are hunting.
Back when I was 'noobie' a decade ago, I spent a lot of time chasing old used pens.....vintage for under E20, then E25-30....when I broke the E50 limit it was a big thing. When I broke the E 100 that was huge.....now if I spend E 150 in a live auction, in mostly I just have to beat dealers who have to sell for a winning, instead of pen collectors I can on the whole get very nice pens cheaper than on Ebay. ... Especially with the German Cartel putting over priced Pelikans up in the auction only section..............the noobie who would have once put Gramps pen up for a start of E1.00 will follow and put it up for E250...........even if it was only worth E100 max....before the Cartel drove up the prices.
Folks in the US pay too much for used German pens as is.
But that was in Europe, that was before Cheap Chinese pens swept the market............Cheap is what ever gets you two or more pens for $10. Inexpensive one pen for $10.
Unfortunately vintage pens are now thought to be expensive. The great balanced Sheaffer Snorkel is lower priced. Affordable, in it will need a new sac put in by a qualified repairman (the guts is complicated) .....get one. There is the nail, regular flex and the rare early '50's semi-flex which will set you back more.
A decade ago a noobie was told to get a Lamy Safari or a Esterbrook then for $15. And all did, so the price jumped to $30 and no noobie was told to go Estie hunting anymore.
We have a Esterbrook sub section.....and everyone needs at least one colorful Estie............warning they are addictive....There are 8 grays; I only had 5........5 greens, only had two....bunches of blues, two reds, a copper and a totsiroll. Different screw in nibs cost $10-15 or a bit more for the 9xxx.
I've bought a Limited Edition Pelikan (translucent Amethyst, live in the pen shop section of a department store; don't remember the price) 200 for more than a regular 200 that I bought online for @ E-85- $90. In I buy good vintage flagship pens for about that....I find new pens expensive, even the affordable 200.
Is a lifetime well made pen.....I really like the springy regular flex nib!!!!
I use to be a semi-flex snob, but learned to widen my horizon. A nice springy regular flex nibs being a tad wetter than a nail; is lots less wet than a semi-flex. So is better for two toned shading inks.
And you can put a semi-vintage matching gold regular flex 400's nib in it....or a gold 14 K stub semi-flex nib from the '50-65 era that gives great line variation; with out you having to do anything.
The nibs screw out so you can change nib width.