That is the point, spend a little is fine a lot then you have to weigh up the game versus a nice holiday somewhere. When I started playing I was so close to getting Yoda so that is when I first spent some money, but it was < £50, which is OK. I can't be bothered to work out how many 1000s one would have to spend to meet the requirements needed for Rey's journey. Might as well save the money for a nice holiday instead.
I have to admit I have known for a while what the requirements were as someone guessed it not longer after it was mentioned that Rey's journey was coming. So I started farming FO even though I knew 7* was out of the question (takes about 4-6 months to get 7* FO), but at least I get to unlock BB-8. Rey I got to 7 star, Finn nearly 7 star. The VETs however, impossible so not worth bothering. Therefore no point in spending any money on it either.
