1992 Honda Accord Shifting Problem

My 1992 Honda Accord Auto 305,200 kms is very difficult to shift out of park. It is getting progressively worse. So bad that my wife cannot shift it. Once out of park it is fine. However, it feels like it will eventually seize up permanently. What might be the problem? Also, considering the mileage and year would it be worth fixing?

Your Brake Transmission Shift Interlock (BTSI) could be the source of your concern (you do have to step on the brake to move shifter out of park dont you?