I do like Alessandra's Frosta head; it is much closer to her look in Filmation. Those pursed lips, however, look goofy, no matter how well sculpted they are. It looks like she's getting ready to spit at me. I'd like to see someone give her a closed-mouth look.
I've ordered from Castle of Power (Zombihamma-AI) and Kevin Kosse (TIN) and both of them had great communication and sent the items quickly. I've also ordered from Evil Mike's Shapeways store, and his accessories are really top notch. I did get something from Alvis Underground, but there was no communication, and it was over 4 months before I received my item.
I get that third-party customisers do this as a side hobby and have busy lives, but if you're going to offer your works for sale, communication is KEY. Even if it takes a long time to make your item(s), a message here and there to keep people in the loop goes a long way to assuaging doubts and misconceptions.