I do not advocacy fraud, I do not force anyone to sell intentionally, but if one chooses to sell internationally it is nice if the you understand that you better then do not sell to certain countries at all.
Why don't you just assume that a seller will not help you commit fraud?
IMHO the best thing to do is either, try to change your home countries corrupt / socialist problems, or possibly find a country that you can immigrate too that has a better environment to live in. (lower tax, corruption ect..)
I really do feel your problem, but when it comes to commerce in the USA, most folks here stick to the fair and true means of the capitalistic way.
This is the only way to garner trust with your customers. (Not to mention avoiding fraud penalties)
When you start committing minor fraud, what else are you willing to do?
For example, when I shop on Ebay and I see someone attempting to sell an item where the listed shipping value is many times above the true shipping cost just to subvert paying a larger transaction fee to Ebay, then I will not buy from them because I do not fully trust them in what they are selling. True, I could be wrong but I'd rather not find out.
Anyway, Good luck!
Asking an individual to change the entire system of his country is the most stupid thing to ask not only in the former Soviet Republics but also in your own so called "democratic" country. Politicians work for corporations and only corporate interests are taken into account when political decisions are made, not individual's. You should know it better then us abroad.
Sorry, there is nothing individual here but this is pure hypocrisy. Americans are no super human beings with all the virtues of the universe. They are simply afraid of cheating because there is harsh punishment as several people pointed out.
Now the OP's demand is unjustified, I agree.
However there are US sellers who write "gift" without the buyer asking for it. I got my Fluke 87V for $295 and it arrived at my door to my big surprise because I was getting ready to go to the customs.
I have asked a couple of times in the past but I do not ask any more because even if the seller agrees to write such things on the parcel our customs people ask for financial proof (letter from the bank, credit card statement) now.
Also I guess Lithuania's system has long changed into capitalism and a wild one like in the other former Soviet Republics and Russia itself. Only the DPRK is left as a communist state.