Model price change

Before gold was our one currency, there was a non-premium silver currency used in the marketplace. Players could set practically whatever price they wanted, until the devs later added a 10 silver minimum price.
I think players should be able to price their creations however they see fit, including making it altogether free. Of course, the "free" option wouldn't fly with avatars - those need a minimum price no lower than the cost of a default one. Now, as for a one-block model costing 1,000 gold - there's really no problem there. The chances of someone actually buying a single block for 1,000 gold is very unlikely.
Now, there is a concern about gold farming, since the practice was not uncommon when silver was around. The builder would price a model at 1,250 silver (the starting amount given to a new account), and then create numerous alt accounts and have those alts purchase that model. I don't know if the devs have finally addressed the issue of alts or not, so I'm not going to say anything more on that matter.

There's a nice "feature" that comes with setting your own price. Players used to host their own contests, with rewards being large sums of silver. The winner would sell a model priced at the reward amount, and the contest host would buy it to award them the silver. The same could happen with gold.