Here is an ad I found.
http://www.petclassifieds.us/i/105615/i.html
Just to add my thoughts: I think it is a ploy to get more money for the piglets.
Every believable ad I've seen say they get to approx. 50 lbs.
And they call this a micro mini pig because of the size difference between them and a standard hog.
I raise pot-belly pigs, and my biggest boar weighs about 65 lb. and is about 18 inches tall.
The rest range from about 11 - 14 inches tall and weigh less than 40 lb. when not bred. Even my other boar is this size.
These are all full grown pot-belly pigs.
When pot-belly pigs get huge it is usually from over-feeding, and not enough exercise. I have seen pot-belly pigs that weighed 100 lb., they were in terrible shape, there legs splayed out in order to support the weight, and they weren't able to move very much.
My pigs are in the normal range for pot-belly pigs, and I sell the piglets for $30.00 each, after they are weaned. I don't bottle feed them, though, so they are a little wild at first. I've never had anyone have any trouble taming them down. They usually are quite tame in a couple of days if they are handled a lot.
There are breeders I've known that have gotten in trouble with SPCA for selling piglets that were only a few days old, saying they were 3 to 4 weeks of age.
The pictures of most of the piglets for sale are only days old.
Take note of the picture of the mother pig with her micro-mini piglets in link I posted. Look at the fence she is laying next to...I believe it is a standard cattle panel. You will see what I mean.
Jean