Tan razonable en precio cuan apreciado por la buena calidad: As reasonable in price as it is appreciated for its good quality.
"The more … the more" is translated "cuanto más … tanto más"; also "más … más" (without the article).
"Than whom," "than which" is translated as follows—
Sedas floreadas italianas que no las hay mejores en el mercado: Italian flowered silks, than which there are no better on the market.
Adjectives ending in io (not ío) drop the whole diphthong before adding ísimo, as—
Amplio—Amplísimo (very ample).
EXCEPT Agrio—Agriísimo (very sour).
Those ending in z change of course the z into c, as—
Feliz—felicísimo[180] (very happy).
[Footnote 180: Z should not occur before e and i in modern Spanish.]