ʃergeʃta•m
{verb I} [Generate paradigm] 1. to rise in price, to become more expensive
♢ mute•r ʃerge•ʃtən {sentence} the dictionary became more expensive
2. to become more valuable, to increase in importance
♢ ka•ʒne fo•to ʒap e•rtəme se•mən ʃergeʃte•ʃ {sentence} every photograph becomes more valuable as time goes by
~ ASPECTUAL CONVERB CONSTRUCTIONS ~
// ʃerge•ʃt(ən) kaje•m {verb II} {perfective} (see above)
♢ pojezdla•n bile•t ʃerge•ʃt kaje•n {sentence} train tickets have become more expensive