Hay what's the ideal amount for gig promoted option

[creativevision9]

Hello everyone, Recently I get the gig promote option but I’m really confused what is the perfect bid that I set for this. I set a 2 Bucks bid and daily limit of 10 bucks the last few days then it cost 70 bucks and revenue 250 bucks. Now I am really confused what’s the ideal bid. If anyone please clear me the concept of the gig to promote option and what’s the profitable bid what I will use in promote option…
Thanks
Creativevision9

N.B: Sorry for my bad english

[imagination7413]

Not sure. Maybe you can find an answer in this thread: Sponsored gigs: progress report!