раскошелиться

1) General subject: come down (come down with your money! - раскошеливайтесь!), dip into one's pocket, dip into one's purse, go to the expense of (на что-л.), splurge (on something) (на что-либо), loosen purse-strings, put one's hand in one's pocket, dig deep

2) Colloquial: fork out (for) (на что-л.), fork over (на что-л.), fork up (на что-л.), shell out

3) British English: lash out (on something)

4) Jargon: fork over, ante up (Come on, ante up! Давай раскошеливайся!), stump up, splurge

5) Makarov: lay it on the line, put it on the line, come down, come down with money, cough up, dive into cookie jar, fork out, fork up