I've only purchased one item from DI, but I loved it and couldn't find it elsewhere. I am always skeptical about stores that later tell me something isn't worth what I paid, because I tend to think they are trying to convince me to only buy stuff from them.
To me, jewelry and art are the two things in particular where the value is what I give it. I.e. how much pleasure I get from it.
Just me and my 'tudes,