The Florida Panthers have been on an absolute rager after winning back-to-back Stanley Cups ... but they don't even have to pay the price -- 'cause Matthew Tkachuk says their $500k bash at E11EVEN nightclub was on the house!!
The star forward disclosed the damage of last week's bash at the popular hot spot during his appearance on Barstool Sports' "Spittin' Chiclets" podcast this week ... and yeah, they coulda bought a house with how much their night of boozin' cost.
Tkachuk fittingly revealed the details alongside Sam Reinhart and Brad Marchand .