It's certainly a judgement call. Seeing that it sounds like the seller made an honest mistake, and readily took back the item, offering to refund shipping both ways, I would personally leave positive feedback so stating (in general terms; perhaps "honest seller - quickly and fairly corrected unintentional error" or something like that). You can never expect to recover your "lost time and energy" in a situation like this, unless there is intentional fraud, IMHO.
A similar scenario just happened to me a couple weeks ago. I bought a camera that was way over-represented IMO. I contacted the seller, and nicely but firmly requested a return. He first offered to fix the one non-working function, but when I balked, offered to take it back. He gave me a full refund, plus shipping (one way). I thought that was quite fair, given some of the antics that pass for "selling" on eBay these days....
Just my $0.03 (inflation, ya know...).
Cheers,
Greg Parker A2 MI USA
> Message: 3
> From: LouDeeter@aol.com
> Date: Fri, 20 Sep 2002 21:00:01 EDT
> Subject: Re: [CR]Re: ebay Etiquette
> To: classicrendezvous@bikelist.org
>
> I don't think you provide any feedback under these circumstances. No harm
> was done, but no deal was done either. You aren't required to post a
> feedback. Lou Deeter, Orlando FL