Hi buffybuendia... You can check http://www.globe.com.ph/mysuperplan/-/MySuperPlan/landing?p_auth=8pL5FYfu for the plans available for the gadget that you want and its corresponding initial cashout.
If you do not have proof of income then you can do either of these things:
1. Pay the MSF 6 months in advance aside from the initial cashout for the gadget and your plan;
2. Have a Globe subscriber guarantee your subscription (Guarantor).