shipping to Kazakhstan only ems and so expensive

Good day. Why did the delivery to Kazakhstan become so expensive?
5 years ago it was much cheaper. I ordered a helicopter and its delivery was much cheaper.
Last week I booked an airplane and paid for a little more than $ 100, then I thought why it was so expensive?
And today I wanted to buy glue for 3 dollars and screws for 5 dollars, but the cost of EMS Express (KAZAKHSTAN) 1g - 999g $ 76.91
Shipping 5 ~ 14 days is terrible. Why are there no cheaper ways of delivery?