I've bought several items from them and am on their mailing list and unfortunately they rarely have great sales and I've never heard of a code. If you keep checking their website they sometimes but select things on sale. They also are having an open house sale now in Atlanta (they also do one before X-mas) but I think it's only at their B&M location. You should call customer service and ask though... maybe that necklace is available on sale at the current openhouse. I've found everyone I've talked to on the customer service line to be really nice helpful.
I have a necklace that looks almost exactly like that from Target. Mine only has 3 strands, though -- large, medium and small. I got it a few months ago, but they may still have it. The one you posted is MUCH nicer, but in case you are strapped for $, there's another option out there.
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"We live in an age where unnecessary things are our only necessities." --Oscar Wilde