costlily
overborrow
charge like a wounded bull
overdeal
overdeliberation
overexpenditure
overstuff
overpermed
extravagance
overdiscount
overprovision
at a price
highway robbery
cost overrun
ruinous
overinsure
overprice
expenseful
overuse
overbudget
overbuy
overmortgage
overvaluable
unaffordably
unexpendable
overfunding
white elephant
overflowingly
overtry
expensefully
set back
out the wazoo
too rich for one's blood
up the wazoo
overfarm
overinvest
dearly
overtouristed
over the odds
overpursue
more than one cares to mention
overthrifty
tough nut to crack
hard nut to crack
ex
overcheaply