I looked up the creator, and despite her having a non-refund notice in her profile, I wrote a polite notecard, described what happened and put in my transaction history.
"I am afraid that Linden Lab "ate" the outfit. I know that I am at a weak position here, so I would like to appeal at your customer service heart and ask if you see any option how you could help me. Sorry for bothering you, and I hope you are willing to be cooperative."I could see she was online since the notecard got immediately accepted. A few minutes later, she dropped a folder with the outfit on me.
[2:06] Peter Stindberg: Thank you very much! That is most kind of you, and not very common among other designers. If you agree I will mention it on my blog.
[2:07] xxxx: *smiles* probably not the best idea :/ as *laughs* people WILL take advantage. But I operate under the idea that a happy customer is worth more than $1.75 *smiles*
[2:08] Peter Stindberg: Then please accept my thanks again.
Abiding to her wish I will neither name her nor her shop, still I'm impressed and want to point this out as an example of outstanding customer service!