As everybody knows, you pay too much in Rome. Too, cadre of quality is important.
However, there's still some few nuns left who can make the old stuff and they do fine work.
It's still expensive, yes, but not as much as anywhere else.
Congregazione delle Figlie di San Giuseppe de Rivalba
Lungotevere Farnesia, 7
You have to speak Italian and have to visit their place down the Tiber from the Vatican to pick out what you want and how you want it and then they will measure you.
These sisters make the finest altar linens, albs and surplices - new or old looking, just tell them what you want.
Liturgy is knowing the unknowable and expressing the inexpressible and this is to be reflected, too, in liturgical dress.