My strategy for Rising Star Game was to increase my number of Fans through packs, but I realized that if I keep an eye on the card market, I can find low prices where it will be more worthwhile to buy the cards directly from the market than to try my luck opening packs. However, not all cards are worth it and so far I have only found 1, which is the R560 Touring Coach vehicle card.
The current price of the R560 Touring Coach on the market is 37,200 STARBITS and this card will give me 500 Fans. In my last pack opening, I opened 12 packs for the price of 100,000 STARBITS and I earned 950 Fans. If I buy 2 R560 Tourings, I will earn 1,000 Fans spending only 74,200 STARBITS, so in addition to earning more FANS, I will also spend less. But this is the only card on the market that I found advantageous to buy instead of packs, for the others I would spend on average 90,000 STARBITS for 1,000 Fans and for that amount I prefer to try my luck with packs because you never know when a legendary card might appear.
Since there are few R560 Touring Coaches for the price of 37,200 STARBITS, I decided to buy 10 of them on the market and increase my Fan count by 5,000 and reach a total of 25,000 Fans.
In total I spent 372,000 STARBITS and that is a great value for 5,000 Fans if I take into account that until now my best luck with packs was opening 120 at once and getting a legendary card that gave me 7,200 Fans. If it weren't for this legendary card, then the total number of Fans I would have gained by opening 120 packs spending 1,000,000 STARBITS would be 12,375 Fans, so buying R560 Touring Coach cards is even more advantageous.
To test and see if this was a good deal, I will open 12 more packs and see how many Fans I can get by spending 100,000 STARBITS.
This time I was luckier and got a good amount of Fans, opening the 12 packs I gained 1,348 Fans and this amount is almost the same as if I had spent 100,000 STARBITS buying R560 Touring Coach cards. Let's do the math: 3 R560 Touring Coach cards cost 111600 STARBITS and give 1500 Fans, so 100000 STARBITS of R560 Touring Coach give 1344 Fans. In this round the packs won but if you take into account the last time I got 950 Fans for 100000 STARBITS then it all depends on luck and the difference this time with the R560 Touring Coach was small so I still prefer to invest in them than risk it with luck, but only when the value of the card is low.
My account currently has 26883 Fans and soon I believe I will reach 30000 and I will be closer to my goal which is 100000 Fans.
I forgot to say but when purchasing the R560 Touring Coach cards there is a disadvantage which is that you don't gain any Skills, but this can be easily solved with music lessons so it's not a big problem if you want to gain more Fans.