1.   promotion expenses– the expenses, money used in order to promote, establish the company (koszty reklamy, promocji). Pamiętajcie też o różnicy pomiędzy: expenses (koszty) a expenditures (wydatki)

According to the books,  promotion expenses should increase according to the development  of the company

2.   prospect(s) of promotion- the chance to get a higher position in a company (perspektywy awansu w firmie, awansu zawodowego)

The prospect of promotion has always been one of the key issues for the promising candidates. 

3.   to get a promotion- to get a higher position in a company (otrzymać awans)

After years of working on the same position he finally got the promotion.