Apparently, Heroclix figures are in the same scale as O-gauge model railroads, which is 1:45 in most of Europe and 1:48 in the United States. I measured the figure to be 1 1/4 inches tall (although she's crouching in a bit of a combat stance) with a 1/4 inch base. She doesn't seem to be exaggerated in proportions at all, unlike many other mini figures. The figure is a solid, unarticulated minifigure that is permanently attached to it's base. The bottom of the base does turn, however, showing different statistics through a window. Having never played the game, I have no clue what they mean.
When you look at the figure, remember how small it is. The sculpt is not unlike something you'd find in a gumball machine, a Dungeons & Dragons miniature, or any of those little minifigures sold in a capsule for 97 cents in the Walmart action figure aisle. Still, there's some decent details here. Babs is wearing her New 52 outfit, and you can actually see the armored look of the body suit on her thighs and torso. She's in a cool fighting pose with her cape flowing out behind her. The face is way too tiny to see any real detail, but her hair looks nice. The paint on the figure isn't bad for the scale; the boots, belt, gloves, and bat emblem on her chest are a metallic gold while the interior of the cape is a bright purple, though the edges separating the inside and outside of the cape are quite messy. I can't tell if the hair is straight red with the black of the plastic showing through or if her red hair was given a wash, but it works since it looks just like her hair on most of the cover art. The face is painted on, but looks a little silly up close. It's simply a smiley face and two googly eyes. The lettering on the base is neat and legible. While the figure doesn't come with any accessories, it did come with a card that details the character's abilities.
Overall, this was a neat little addition. I only paid about $2 (and got free shipping) to order her, and I think she's worth that. I've always loved minifigures (I probably spent more time playing with my Star Wars Micro Machines miniatures as a kid than I did playing with the Kenner figures) and it's cool to have Batgirl represented in a smaller scale in my collection now. She's easily a Good and a 1/2, with her paint bringing her down a bit.