Griffin:
Here is the response I got:
i am very sorry...
It is hard to do returning item since returning shipping cost is very high..
How about me refurning you $10.00 out of $25?
I am very very sorry again..
if you have better idea or preference, let me know again.
I will do my best to satisfy it.
I've had some time to think about it. I don't want to be a jerk and I don't want her to get hosed in the deal either. I was thinking about asking for a $15.00 refund (10.50 out of my pocket) as this would be about 50% off what I would pay in-store for the kit. I would still have to find English instructions though. I would then add it to my meager stash and continue looking for the kit I wanted.
Does this seem reasonable?
In my opinion? ABSOLUTELY NOT.
This guy's got some nerve! He sold you the wrong kit, wrong scale, and with no instructions yet--and he wants to keep YOUR money for HIS screw-up and YOUR inconvenience?! That's chutzpah!
Tell the guy it's HIS mistake, and that he has to eat the costs. If he doesn't, open a resolution ticket with ebay, forward them his response, explain your understandable indignance, and ask for a full refund.
Jerks like this guy are unfortunately the rare examples that give eBay it's undeserved bad reputation among some.