BTD6 Legends (DLC) is cheaper in epic

Well i got BTD6 on the PlayStore(yes I bought it), and recently Epic Games mobile lauched a new version where you had more games to buy, e with that they chosed 2 games to be free and BTD6 was one of them, I dicede to install it just to see what are the diference, and after I connect my account (that i use in both version) i noticed that the value of the DLC was half cheaper.

Values (converted from Real(Brazil) to Dolar(USD)) Original: $10,35 Epic: $4,69