John Gills Exposition of the Bible Commentary - Leviticus 27:19
And if he that sanctified the field shall in any wise redeem it ,.... Is desirous of it, and determined upon it at any rate, repenting that he had parted with it in this manner: then he shall add the fifth part of the money of thy estimation to it : the Jerusalem Targum is, the fifth part of the shekels of silver: that is, if he has a mind to redeem it, and is resolved on it, as soon as he has sanctified it, then, besides the fifty shekels of silver it is rated at, and might be sold... read more
John Gills Exposition of the Bible Commentary - Leviticus 27:18
But if he sanctify his field after the jubilee ,.... Some years after it, more or fewer, or it may be, when half way towards another jubilee, or nearer: then the priest shall reckon unto him the money according to the years that remain, even unto the year of the jubilee ; thus, for instance, if it only required an homer of barley to sow it, and the whole value of it from jubilee to jubilee was but fifty shekels of silver; then supposing it to be sanctified in the middle of the fifty... read more