1. Is this set I mentioned above violating any rules of this forum
could be considered as violation of any copyrights?
2. If I decide to buy something like this, will anyone in this forum will be able to help me, considering the fact is not from official channel of sale?
3. Is a good idea to buy something cheap
it's something completely new for me and maybe I will not achieve anything at all and it will be just waste of money - and if it will be, in my opinion it's better to spend less than more for this.
For example, I have no idea if it could be powered my USB cable using universal (phone?) charger. This more expensive kit, called "mega" has at least some kind of charger. For example, I found a kit called "Geekcreit® UNOR3 Basic Learning Starter Kits Upgrade Version For Arduino" and it has no power unit, just a battery + battery connector. Of course it costs less than "mega", because the price is just £16.45For me, as the one has no idea what could be achieved, probably it could be sufficient... but buying a simple wall charger could cost £10 or more. I'm not really sure if this saving is good idea... or maybe is a good idea?
"Why original product is better?" - I understand, could be older version, having older components or being slower than recent original parts / boards.
Maybe electronics is not for me or maybe if I will achieve something will be much worse than anyone before me achieved in better way. This is something I can't answer myself.
So could you please tell me, if my idea is realistic or maybe is stupid and on my level is completely out of my (or anyone range)?