[Avodah] How much for the mayo?

[Zev Sero]

On 31/10/2010 5:37 AM, David W. Eisen wrote:
> I had a similar incident involving my recent trip to the States. I went shopping in a certain outlet mall that had a store of a particular brand that my son's friend had asked if we could purchase there a certain shirt for him. Neither my son nor I intended on buying anything in that store, but a particular shirt also caught my eye, and that day the store had a 50% discount on the price of a shirt when buying an additional shirt at the full price. Both the shirt my son's friend asked that we buy for him and the shirt that I ended up being interested in were being sold for the same price. I bought both shirts with the 50% discount on the second shirt. In all honesty, I would not have bought the shirt for my self at the retail price, and it was only the discount that provided the incentive for making the purchase.

Your question was about hilchos ribbis, not hilchos shlichus.  At the end
of the teshuvah, RYC mentions as an aside that you weren't a shliach to
buy this shirt, and that had you been a shliach it would have been different.
SA Harav, Hil' Mechira #11, says that if a shliach gets a windfall through
his shlichus, he should share it with the meshaleach.  RYC doesn't say why
you were not a shliach, but perhaps one reason is because the "meshaleach"
didn't give you money with which to buy the shirt for him.

RTK's case with the mayo is completely different, because at the time she
took the discount she was acting entirely for herself.

-- 
Zev Sero                      The trouble with socialism is that you
zev at sero.name                 eventually run out of other people’s money
                                                      - Margaret Thatcher