I may be wrong, but I have seen those rifles go for around $250, maybe a bit more with the scope. The military style .22 rifles, which have a full stock and are made to look like a K.98k, are of more interest to collectors and bring a lot more.
FWIW, few armies actually used .22 rifles for recruit training. Such rifles were usually used by youth organizations to prepare their members for military service. Active and reserve units did sometimes have small bore rifles for use by rifle teams in target shooting, but they were used by skilled marksmen, not by trainees.
Jim