I get
 | 0.59$ Armed Forces of Ukraine1 pc 10 hryven 2021  Ukraine |
 | 0.51$ 50 rupiah 19981 pc  Indonesia |
 | 0.13$ 50 kopecks 20231 pc Ukraine |
 | 1.7$ 100th Anniversary - Birth of Sergei Prokofiev1 pc 1 ruble 1991  USSR |
 | 1.8$ 175th Anniversary - Birth of Taras Shevchenko1 pc 1 ruble 1989 USSR |
 | 2.8$ 100th Anniversary - Death of Mihai Eminescu1 pc 1 ruble 1989 USSR |
 | 2$ 550th Anniversary - Birth of Alisher Navoi1 pc 1 ruble 1991 USSR |
 | 1.8$ 100th Anniversary - Birth of Konstantin Ivanov1 pc 1 ruble 1991 USSR |
 | 1.7$ 125th Anniversary - Birth of Janis Rainis1 pc 1 ruble 1990 USSR |
 | 1.7$ 125th Anniversary - Birth of Pyotr Lebedev1 pc 1 ruble 1991 USSR |
 | 1.7$ 130th Anniversary - Birth of Anton Chekhov1 pc 1 ruble 1990 USSR |
 | 2$ 175th Anniversary - Birth of Mikhail Lermontov1 pc 1 ruble 1989 USSR |
 | 1$ 30th Anniversary of World War II1 pc 1 ruble 1975 USSR |
 | 1.7$ 150th Anniversary - Birth of Pyotr Tchaikovsky1 pc 1 ruble 1990 USSR |
 | 1.4$ XXII summer Olympic Games, Moscow 1980 - Yury Dolgoruky Monument1 pc 1 ruble 1980 USSR |
Piece: 15
Total: 22$