pony up(something)
phrasal verbwithponyverbuk/ˈpəʊ.ni/us/ˈpoʊ.ni/
USinformal
topay(aparticularamountofmoney) for something :
As well as putting up his owncash, hepersuadedothersto pony up.
You could beaskedto pony up hundreds ofdollarsfor areplacement.