You want to sell your Wii because you received a PS3 for your birthday. You post an ad at school that says, "Wii for sale for $150. First come, first served. Inquire at this phone number." The school principal calls your number to ask if the Wii has been sold and then asks if you can lower the price by $25. Is this a valid acceptance of your offer? Yes or No?
No, it is not a valid acceptance of your offer, because it will depend on whether if he is just inquiring (most likely for another person), or if you are willing to lower the price in the first place.
