This is a bit tricky, as I am aware that most people on Second Life see it as a hobby, and the prices are not equivalent to Real Life, however…..
This is no excuse for shocking customer service that you sometimes get in SL. I have had a few issue with things that I have bought recently, and the responses (or lack thereof) were totally different. One of the items didn’t work at all, and the creator got back to me very quickly, apologetic and offered an immediate refund – yay to him (PJ Wiles). The other one however accepted my notecard asking for a replacement/fix or refund 2 days ago and so far I have had no response, I won’t say his name, I will give him till Monday to respond before I give a negative rating on SLExchange 
I hate having to moan about this but what has to be remembered by creators is that when someone buys their products there is a moment of trust – they pay, you send the object, there is no ‘backup’ for the customer should things go wrong. When something goes go wrong, obviously the customer should be patient, giving a reasonable time to get an answer (a week?) due to rl constraints and sheer numbers of questions some creators recieve daily.
Ignoring customers polite requests when something goes wrong is simply not good enough.
darkley1