The item may very well sell at a higher price, it simply depends upon the shard, and the item, and how badly you need it. Plus to some degree it depends on who you are....She plays on NAPA, and as you can see below, with the exception of Atlantic, Pacific, and to some degree Lake Superior, the other shards listed have either no Gree Clothing or very little of it available in Luna at the moment. This means that if someone is looking for another piece to wear, or to dye and then turn into another article of clothing that Lariat can charge more b/c the individual's demand is greater than the current supply. Of course its possible non-luna vendors exist with the clothing, but Luna is typically(not for all shards, but in my experience this holds true for napa) indicative of what items are for sale throughout the shard.
Atlantic - 29 - 500k-5m
Great Lakes - 2 - 500k-1m
Lake Superior - 7 - 1-2m
Napa - 0
Pacific - 18 - 500k-3m
Europa -1 - 3m