This is the rule in the forum rules:
VIDEO TRADES:
While we do encourage merchandise and tape trading, out of respect for the copyrights of the Jim Henson Company personal and unreleased videos, homemade VCD's and DVD's may not be sold for profit or cash on our forum. Advertising or promoting such illegal material to purchase will lead to suspension of your account. In some cases, we may forward all of your account information directly to Henson (or eBay if applicable) for them to investigate further.
The rules as set forth never indicated as far as replicas being made. Personally, I do not have a problem with replica sales. I think it is to the individual's own conscience if he/she chooses to do something like that and it is their responsibility to deal with the legalities of doing such a thing should the actual copyright holders decide to pursue this.
These, however, aren't replicas as no official merchandise was ever made of Calvin and Hobbes, and the only merchandise ever made (other than books) were the window stick-ons. The other thing, too, is if they are charging for the materials and time only, they can claim a loop-hole--especially if they announce that these are not their own creations or copyrights but are their work based on someone else's creation and the original owners hold the copyright.
Private messages/e-mails will probably get a quicker response from the moderators than posting in the threads, Camellia. However, I did see this one because I'm interested in the dolls being made.
At any rate, it isn't for us to police the forums about who is infringing copyright and there's a whole thread dedicated to that issue here:
http://forum.muppetcentral.com/showthread.php?t=11588&highlight=copyright
Since the only rule ever made was only for video trading, I will get with the other moderators to discuss handling Muppet replica, ebay auction announcements, and other copyrighted character "marketing" so the forums aren't flooded with discussions about said items...if it is even a real issue at all.