John Trapp on Jeremiah 32:9

Ver. 9. And I bought the field] This was bravely done:Liv. lib. 26. Plutar. in Annib. Flor. l. 2. c. 6. to make a purchaſe at ſuch a time, when the enemy was ſeizing upon all. That Roman is famous in hiſtory, who adventured to purchaſe that field near Rome wherein Annibal had pitcht his camp. Verum eorum res non erant ita deploratae, but the Romans were nothing near ſo low at that time, as the Jews were at this.

And weighed him the money] That was the manner of payment in thoſe times.Olim moneta librabatur. Pater puellae id aurum in dotem viro appendit. Ʋnde & nomen marcharum bodie nobis ſupereſt. Zegedin. Hence the Hebrew Shekel from Shakel to weigh. Gen. 23.16. (our Engliſh word Scale ſeemeth to come from it) the Greek [non-Latin text not transcribed] ponderare, Exod. 30.13. Mat. 27.9. or of ſtatera for a balance: the Dutch and Engliſh Mark cometh from a like Original.

Even ſeventeen ſhekels of ſilver] No great ſum, not much above fourty ſhillings; but it might be as much as the thing was worth, conſidering the times eſpecially.