Plenty of pen shops in USA or for that matter all over, Ebay is a good source for seeing what its worth.
I'm not familiar with the Wyvern brand you pictured.
Apparently Wyvern started off where I live in Leicester, shocked me.
Normally buy with my eyes more than my head
Would love a Parker Duofold but can be so expensive and you could loosen the stiffness.
This turned up today in the post
A ridiculously cheap Mont Blanc Meisterstuck 145 copy from Aliexpress. Writes like a dream and takes cartridges, a double bonus