There are sites that ship US belts to Korea.
It usually takes about 14 days.
Rogue 3-inch belt costs about $123.
로그 오하이오 3인치 2P 리프팅벨트 Rogue Ohio Lifting Belt : 복싱천재
If you want a Dominion's, it will cost around $220.
Belts made in Pakistan can also be bought in Korea.
You can get it in about 3 days.
I have no experience with Pakistani belts and cannot give any advice on that.
민생 벨트 파워리프팅 헬스 레버 : 도미닉 팜
All these sites are in Korean.
E-mail me if you would like help.
I will show you the Korean 'Jeong'.