Go dine or club in Equinox loh.....Actually, if you 1 PSA, try the Prima Revolving Restuarant. Another cheaper way with nice view is the chair lift of the "Ruge" game in Sentosa, afew dollars can take veri nice view of the sentosa beach bird-eye view!
According to some web info:
The DHL Balloon will open daily from 11.00 to 22.00. Tickets for the 10-minute flight are at S$23.00 (adult), S$13.00 (child aged 3 to 12 years) and S$2.00 (toddler).
Located at Tan Quee Lan Street
I believe Mpenza has ride it before. Not sure now got discount or not.