I am trying to figure out how to find the EV of promotions on Draft Kings/Fanduel, so that I can only bet on the positive EV promotions. Hoping someone smarter than me can help me figure out these calculations...

For example: Draft Kings is offering a 25% odds boost on UFC 255 with a max wager of $50. A line that I see is Joaquin Buckley (-278) vs. Jordan Wright (+215). If you were to take Buckley the 25% odds boost would bring you to -225. Is this a profitable bet? I can't figure it out.

An easier and unnecessary hypothetical example that should be understandable to all: DK and FD were offering promos for the NBA on who would score the first basket of the game. Both teams were -110 to score the first basket but both are boosted to +150. Obviously this is a positive EV bet because both teams have a 50/50 chance of scoring the first basket and a bet will make you 1.5 times your money.

Anyone smart out there who can help?