Keppel Qn Mattress Free |link|

This phrase appears to be a classified advertisement promotional offer for a queen-sized mattress located in the Keppel area.

Purchase or participate in the promotion:

Step 2 – Price the bed frame alone
Same bed frame sold without promotion last month: $450. keppel qn mattress free

The Deal: Developers sometimes offer a "Free Furniture Package" or specific "Welcome Gifts" to early bird buyers. A common inclusion in these packages is a Queen-sized (QN) mattress.
The Catch: