I was told that there are actually 3 or more different models to choose from (900,901,3388), the RSP was 250-280. One of my friend said it was also sold at Bedok town centre makeshift stall for $300.
Here is the hear-say reviews. ( I don't own a set)
The set is very dependent on Signal Strength.
Auto-scan at CCK exec condo return 140+ channels, Sengkang hdb about 130 channels.
Bedok hdb around 110 channels, and in new estate, where home owner does not have SHTV subscription, 0 channel, u need to get them to connect up some points.
Signal Booster was inbuilt, TV images appeared clear than before use.
My 2c worth.
PS:
I do not sell these device, I only know its a shop in Sim Lim Tower selling DVB-T (TVmobile, HDTV set-top-box), and they would go retrieve your set in their backoffice, sell to you in one corner outside their shop and issue no receipt.