I don't personally know much about this, but the only way I would think it would be worth something is if it were a common mistake. I don't often make the mistake of replacing an "o" with "0", so I doubt many other people do either. Therefore, it's probably only worth money if it is a frequent misspelling or mistake. I don't think it is in this case.
they looks wow at first but they are not worth to develop and contribute traffic to other domains like sports .com , poker .com etc
I guess the o and 0 are quite close to each other on keyboards, but generally, it's not like you're skipping a double 'l' or 't', so it probably wouldn't be worth developing. Who knows, maybe a poker or sports company would like it if you put it up on major marketplaces, eg. Sedo.
Basically new domain names are of value because: = They attract type in traffic = They contain a keyword or 2 So no I wouldn't bother with these. Justin