The only person I have had a negative experience with on LA is Lilylassie. I ordered a couple of clumps and expected to pay the full shipping charge ($15) for one and the reduced charge for the other ($2). I was charged full shipping for both. When I questioned it, she said they were so big she had to ship them in separate boxes. But they came in just one box and they weren't all that big. I removed her from my list so I won't order from her again.
Some of my more favorable sellers:
Hemguy
Chocolatechiphorses
Perennialist
BlueRidgeButtons