If you have a US Passport and can travel, you can get approx 20k MQMs and (as GM) approx 38-40k RDMs for $1028.50
Dec 27 JFK-NRT-SIN
Dec 29 SIN-NRT-JFK
Your additional cost is the positioning flights to JFK.
You may want to follow the discussion here:
http://www.flyertalk.com/forum/delta...mqms-year.html