Stan, forgive me for sticking my schnozz in here but if it was the wrong timer couldn't you just have gone to the seller and ask if he could chage it for the correct one and refund you the difference if there was one?
Mistakes happen...yes it's worse when you do it in business...but we all learn from it.
I got docked 18$ today because I didn't look at a packing slip carefully....
And how many times have we been working on something at home and the thing-a-ma-bob we bought at the hardware store won't fit/work; the store is 10 blocks away, it's raining sheets and it's getting dark on a Sunday and the water in the sink is rising fast...