Well, since you put it here then let's talk about it.
You said "producer wrote, that he can send relacement of main parts (i still recieved nothing from him) or I can return model to him with money refund minus shipping costs."
1. Why don't you mention that you ask for another full resin kit instead of replacement for the major parts?
On January 24th you contact me because of the quality issue, I requested that you send the photos to me and promised you I can send you major parts again for replacement and send the photos of them to you before I ship them out. I agreed to send you all part on your photos which you think not in good quality to you again for free, but what you ask is even more after that.
Here is the quote for you original reply:"But practically all parts in kit is such bad quality. It will be good, if you send me all new resin parts without photoetched parts.- tosik83"
Here's what I replied to you:"Hi, I think it's not fair to me if I send you another full resin kit just because some parts of them are not in acceptable quality. "
"So I can only accept that I send you the new parts for replacement instead of the full kit. Otherwise I would prefer it to be returned."
And after that till now you just ignore my reply and did not contact me any more. You did not tell me which way you would like to choose and how can you say you still recieved nothing from me?
2. I would never ask my customer to pay for the returning shipment if that's my fault. But you have to tell me you'd like to do that.
Finally, here are the photos of the new parts. If you tell me you want the replacement that day they should already on their way to you. If you still want to solve the problem then please contact me immediately. I've been waiting for you since our last conversation. Please let me know either you want the replacement here or return the item, I would pay for the shipment to you.