Well, you don't have to snap stall kites in low/no wind. They stall regardles...
Usually smaller kites are much easier to stall than larger kites, so I'm not sure if that's the goal.
A new full size indoor kite is costly. The new Prism 4D isn't a big kite but looks to be an excellent no/low trainer. I only flew it in 5MPH, but folks I trust spoke highly of it. It seems like the modern version of the classic Wren, which is generally the best indoor trainer IMHO.
The only full size (7' or larger?) indoor kites that might be had for under $200 would be on the used market. Prism Vapors sometimes come up that cheap, but rarely. I bought one for $200 a couple years ago. Prism Ozones (more like 6'?) work ok indoors but are a bit more effort. Seen a lot of good flying with them. There are a range of other old skool indoor kites but they only come up from time to time.