I want to sell a second hand item to a friend. We have made up a price that we both agree on. Now I found out that it may be worth much less in the market, although he really likes specifically what I have. Is it a problem to sell it for the agreed price?
One should let the buyer know about the market rate of this second hand item, and if he agrees it is permitted.
חו״מ רכ״ז סכ״א.
שוע”ר הלכות אונאה ס״ד.