What I am wondering is, if the buy-in feature is interesting and rewarding?
All bonus feature on slots are pretty interesting but wether you manage to get profit or not from those would be another story.
Few hours ago, I bought 3 bonus feature on Ted Megaways Slot ( Not on Roobet ) and each cost $15. The first one was totally shit, I landed $0.24 . Second was probably $5 or so , my screen crashed before its done. Third was the best, I landed $204 .
In bonus buy, its either bad or some decent amount. Dont expect anything crazy unless you are buying one of those high volatility slots like Money Train 2
I think it is kinda hard to get a decent winnings from TED since its RTP is around 93%(got this from other casino site but I do not know if Roobet have the same RTP) much lower than the Return of Kong. I almost have the same story except that my highest winning on this is just around 110x multiplier which is much less than the price of the Ted buy-in feature.
Bonus world is not really something you may want to get involved all that frequently, it is a very fun thing when done in short bursts and it is really entertaining to spike the game up for a while when you are bored, but if you keep playing for the bonus you are going to get upset.
My spouse loves playing slots games and I can tell you that she can play for 8+ hours straight without getting bored, and thankfully I moved her away from the real thing and downloaded some fake "gem" type of mobile slot games that doesn't cost any money or even if she doesn't have any game money left you spend like 9 bucks and get a bunch of them so it's fine.
However some people really can play for just like 25 cents a pull and still manage to spend thousands per month when slots are THIS MUCH fun for them, I can't put my attention on anything in the world for 8 hours but slots do have that affect on some people.