Don, is this a tool worth buying? I picked one up in a store a few weeks back and thought," Hmm?, seems like a too short bar to be useful; and is this soft steel that'll bend if used with a cheater on one end?"

I noticed 2 sizes also, and both were painted black, so the steel grain was'nt visible. Are they made in China too?
I don't know if they are made in China or not, I guess it is even money that they are at this point in our societal development.
I have one of them (Stanley Wonder Bar), they're pretty strong. None of these things replaces the destructive capability of a three-feet long crowbar. I used to have one of the shorter versions, about 12-14 inches long, of the classic wrecking bar as well.
I think the Stanley Wonder Bar and the four small pry bars from County Comm are all worthwhile tools to have really, but along with the TOPS tool, the Boker COP Tool and the Breaker Bar from County Comm (the knife-like tool, not the aforementioned four smaller pry tools), you cannot expect any of these tools to perform like a large piece of steel - that is a large crowbar.
The current thread running on the TOPS tool has a link to the product and when you view it, you will see a picture of the tool ready to open a door by forcing it. That's a dubious claim given the door and frame shown.
That's not to say that the tool is useless, it's probably a pretty good prying tool but that particular "job" for such a prying tool is a bit much. You could use a pipe for leverage but it's likely the tool would break because the fence-post-pipe isn't going to first.
The County Comm tool is about $12.00, the listed price of the Boker COP Tool is in the mid-$30.00 range. It will be interesting to see the price of the TOPS Pry and Probe Tool. If it's not somewhere in that range, I would say that it is not a worthwhile tool to have
for the money.
A real crowbar is usually either hexagonal or octagonal in cross section for the length of the bar and then that curls or otherwise dissipates into the working ends of the tool. There is
no flat bar and certainly no knife-like instrument that is going to be as strong as those are. They are for deconstruction/demolition use and that's what you need to force a door like that, barring special forced entry tools that Fire/SWAT uses that can spread the jamb and pop the bolt. If you cannot spread the jamb and pop the bolt, you basically have to force and rip the frame and door to get the bolt to pop out, etc.
Improperly installed doors and frames, prior damage to doors and frames or a bolt that is less than 3/4" in length - you might make it in with this (TOPS, Boker, CountyComm) tool and other tools like it - given the door and frame combination we are talking about.
Wooden doors and hollow core wooden doors and all the rest, yeah, it will probably work. I think they just chose a poor picture for the ad on their page. Double doors or single doors that have a lot of glass and aluminum or similar frames will probably fall to this and other tools like it because there is more room to work and get some leverage and the metal is softer.
It's common in the knife industry to try to get knives to perform like pry bars and now they are trying to get small prying devices to perform like wrecking bars.