Hey Kaekyn!
Unfortunately, none of the poles other than X-pole, Lil Mynx and Platinum Stages are considered safe enough to do more than posing with. The first two links you put up, the poles don't appear to link together in a safe way- I feel that the linkages between each section are far too small, and they will likely bend and possibly break if you try spinning on them. The last one has no actual pictures of the pole itself, and that seems pretty dodgy to me, as well.
I know that the poles are expensive when you're looking at the three big players, but they really are worth it. My first, and currently only pole is a Lil Mynx stainless steel, which is fully stationary, and actually cost me about $350. The Veena pole is almost that price (when considering shipping to my area in Canada, anyways) and has many other awesome features on it. I'll also point out that I've had my pole for... um, 5ish years? If you keep it clear of any kind of metal (meaning rings, belts, bracelets, as well as being very careful while moving) and clean it often, they last forever. My pole is my bestest friend for dancing, and I have almost no complaints (almost none as in I wish I'd done my research and gotten a rotator!).
I understand the feeling of wanting to give it a try, but not wanting or being able to dish out the money for a truly safe pole. But, you must remember that this is also a sport- without your safe pole, you could fall and seriously hurt yourself!
Do you know if there are any studios near you? It's possible you could speak to one of them about having a trial class, or see if they have some "open pole time," as I've seen in other studios!
Otherwise, working on things like strength, flexibility and even doing handstands and elbow stands will really give you a head start when you are ready to buy your pole!