The jukeboes are a bit random, can sometimes be 2,3,and 6 on 3 of them, but I have seen £50 on three of them. £40 seems like a pretty normal amount for 4 of them. I had five chests spin in on a 'blue lagoon' machine once; the top thing you can get as it can't even spin in £500, and it only gave £90
I am a bit annoyed because when i went yesterday, i checked the win plan and the max i could win would have been £250. So £40 really is low on 50p. I was expecting at least £150 for 5 of them.
Oh, you said before you only got 4, not 5. The amounts go up exponentially from 3-4 and 4-5 so £40 for 4 seems fair, if not generous as on only 50p stake but for five it does sound a bit shit.