If you guys know the game location (Available in Singapore), things like:

The price per game
The game setting (i.e. Max stages)
e-AMUSEMENT OK/Local Mode
The version (Version number, or version from which country [If any])
Edit Data On/Off
The quantity

You can post the information here
Latest game will be the main priority.

DDRX @ Zone X LOT1/DBG/JP with the same settings:
Version: Latest (A:A:A:2009063000)
Price: S$1.40 VIP & S$1.55 Normal
Max Stage: 3
Game level (DDRX has the easiest lifebar in DDR history): 4/Medium
Edit Data: On
Joint Premium: Yes
e-AMUSEMENT: OK
Details: Upgraded from SN1 cabinet (SN1 → SN2 → X)

DDRX @ Bugis
Version: Latest (A:A:A:2009063000)
Price: S$1.50
Max Stage: 3
Game level: 4/Medium
Edit Data: On
Joint Premium: Yes
e-AMUSEMENT: OK
Details: Upgraded from some old unknown cabinet (DDR Extreme? → X)

DDRX @ Iluma:
Version: A:A:A:2008121600 (Correct at time of checking; a month ago)
Price: S$1.50
Max Stage: 3
Game level: 4/Medium
Edit Data: Off. Need confirmation.
Joint Premium: Yes
e-AMUSEMENT: No (Coming soon?)
Details: Upgraded from SN1 cabinet (SN1 → SN2? → X). Old X version with tons of glitches/bugs. Screen lag is present. After Encore Extra Stage, the machine will have 50% chances to crash & auto reboot (Beware of credit queueing)

DDRX @ West Mall:
Version: Unsure (A:A:A:2009xxxx00)
Price: S$1.50?
Max Stage: 3
Game level: 4/Medium
Edit Data: Unsure
Joint Premium: Yes
e-AMUSEMENT: NO
Details: Upgraded from SN1 cabinet (SN1 → SN2? → X)

DDRX @ Causeway Point:
Version: U:A:A:2009072300
Price: S$1.50?
Max Stage: 3
Game level: 4/Medium
Edit Data: Unsure
Joint Premium: Yes
e-AMUSEMENT: NO
Details: USA HD Cabinet

There's another DDRX machine in Parkway Parade. It's a US HD cabinet as well. Unsure about pricing and versions and stuff. No joint premium, 3 stages. That's about all I know.

Parkway Parade, HDX, U.A.A 2009072300
Normal $1.50
VIP $1.40

DDRX @ West Mall:
Version: A:A:A:2009063000
Price: Normal S$1.50 & VIP $1.40
Max Stage: 3
Game level: 4/Medium
Edit Data: On
Joint Premium: Yes
e-AMUSEMENT: Yes
Details: Upgraded from SN1 cabinet (SN1 → X)

DDRX @ Tampines Mall:
Version: A:A:A:2008121900
Price: Normal S$1.50 & VIP $1.40
Max Stage: 3
Game level: 4/Medium
Edit Data: On
Joint Premium: Yes
e-AMUSEMENT: NO
Details: USA SN2 Cabinet

DDRX @ Cineleisure:
Version: Unsure (A:A:A:2009031600)
Price: Normal S$1.50 & VIP $1.40
Max Stage: 3
Game level: 4/Medium
Edit Data: NO
Joint Premium: Yes
e-AMUSEMENT: NO
Details: USA SN2 Cabinet

DDRX @ Parkway Parade:
Version: (U:A:A:2009072300)
Price: Normal S$1.50 & VIP $1.40
Max Stage: 3
Game level: 4/Medium
Edit Data: On
Joint Premium: NO
e-AMUSEMENT: NO
Details: USA HD Cabinet

I've edited part of your post