Arcane has been a massive hit for Netflix and Riot Games — an unabashed critical darling that's been embraced by League of Legends fans and otherwise — but it didn't come cheap.Variety revealed some pretty jaw-dropping numbers in a new report on Wednesday, revolving around why Riot's expansion into film and television has been stunted despite Arcane's success. A lot of that has to do with budget; according to Variety's sources, it cost $250 million to make and market Arcane's two seasons. That's a hefty chunk of change for 18 episodes.Riot co-founder and chief product officer Marc Merrill declined to confirm that whopping $250 million number when speaking to Variety, but stood by the results. “We’re more than comfortable with the spend it took to …