I pay $25/14 GB pretty consistently here in Singapore. Ironically, in Singapore, it's cheaper for me to pay for traffic on a pre paid SIM, than it is to pay for it with a pre-paid account. Works out great when we're downloading 50-60 GBytes/month. $100/month gets us 56 gigabytes @ about 20-30 mbits/second.
It's too slow. Everywhere I go - St. Regis, Fusionopolis, Fraser Place - Lucky to get more than 3 Mbits/second. I have to rely on wireless for performance. Singtel + LTE gives me about 30 Mbits.