Explanation: Also a rise in price is like a small gift.

Implied question: He could have asked, if so (he deposited it back with him), what is the Chidush?

Answer: Even without [this question], he asked well from the Seifa.

Implied question: It says below (80b, that if a craftsman told the owner) 'take your item and bring money', he is a Shomer Chinam (on the item)!

Answer: That is because initially, he was a Shomer Sachar, and when he told him 'take your item', he did not say so to totally remove himself from Shemirah, rather, so he will not [still] be a Shomer Sachar.

Implied question: It says in Bava Kama (47b) that if Ploni entered [with his animal into a Chatzer] with permission, the owner of the Chatzer is liable [if the animal became damaged]. Rebbi says, he is not liable unless he accepted Shemirah.

Answer #1: Our Sugya is like Rebbi, for there, Shmuel ruled like Rebbi.

Implied question: There, Rav ruled like the first Tana!

Answer: We hold like Shmuel against Rav in monetary matters.

Answer #2: Even according to Rabanan, who obligate, this is because he said "bring your ox in", which connotes "and I will guard it";

However, when he said "the house is in front of you", he totally removed himself from Shemirah.

Question: If so, this varies! Sometimes [a merchant or relative] is far from him, and sometimes he is close!

Answer: There is always one amount [of time], which is usually enough to show it to a merchant or relative;

If they are close or far, due to this we will not give to him less or more time.

Assertion: Even according to the opinion that also a sixth of the money was taught (that this is Ona'ah), it is more reasonable to follow a sixth of the Mekach, for the Ona'ah and the error depends on the Mekach. (Maharsha - this teaches about a case in which if we calculate based on the Mekach, the error is more than a sixth, and if we calculate based on the price, it is less than a sixth, or vice-versa. E.g. he sold something worth 11 for 13.)

However, the Ona'ah and the error do not depend on the coins, for they need not be appraised.

Question: What is the source of this? Perhaps also this is Shetus Mekach, for [the error] is an outer sixth (a sixth of the total with the addition)!

Answer #1: Presumably, we should follow a sixth of what the Mekach is worth, for the Ona'ah and the error depend on it.

Answer #2: Also, when the seller was afflicted (underpaid), you cannot find an outer sixth [for there is no addition]. If he sold something worth six for five, [the error] is an inner sixth.

Question: If so, why did our Mishnah teach "a sixth of the Mekach"?

Answer: It explains that Ona'ah of a sixth [of the coins] that will be in the Mekach (sale).

Question: [If so,] the Mishnah should have omitted "a sixth of the Mekach"!

Question: What did he ask from the Seifa more than he already asked from the Reisha?!

Note: If we will say that the answer is weak, we can say that he asks again to show that this is not the Halachah. When there are many questions and poor answers, this shows that the Halachah does not follow this opinion (Rosh Bava Basra 1:1, b'Sof).