I doubt that anyone would sell you an original manuscript, if that's what you meant. They are usually in museums.
So it's a very expensive hobby I expect.
The reason for looking for romantic-on is basically that my experience is, with other books, that as soon as it from the before 1800 the price tag goes up too much for me.
It does seem to be the case that dealers get considerably greedier when the edition is 18th century, even very late 18th century.Even reasonably obscure composers such as Dussek, Steibelt & Cramer are expensive with mainstream composers often astronomic.Happy shopping.Thal
Happy shopping.Thal