Is this an ok choice for a supergun rgb to ntsc encoder/converter

http://www.hrx.com/prodindx.htm

I might be able to get this for real cheap, Thanks.

It wont let me modify the post but the model number is (Model CV223 - RGB/S to Video). It would be a little diffrent using something this grade but what do you think the results would be. Im always trying to save a buck.

Model CV223 - RGB/S to Video


CV223A Inputs: (BNC Connectors)
Red,Green,Blue: 0.7Vpp each, 75 ohm, 15KHz
(1.0Vpp with Sync)
Composite Sync: 3 to 5Vpp, 75 ohm, neg. pulses


CV233A Inputs: (BNC Connectors)
(R-Y),(B-Y): 0.7Vpp ea., Y: 1.0Vpp, 75 ohm, 15KHz (SMPTE 100% Bars)

Outputs:
Video: (NTSC or PAL composite baseband)
1.0Vpp, 75 ohm, BNC
S-Video: 4 pin mini DIN Connector
Y: 1.0Vpp, C: 0.3Vpp burst, 75 ohm

Controls: none

Performance:
Luminance Bandwith: composite video = 4.5MHz, Y/C = 6MHz
Horiz. Resolution: composite video = 330 lines, Y/C = 480 lines
Signal/noise: >55db


Overall:
Operating Temperature: 0 degrees celcius to +45 degrees
Operating Humidity: 10%-95% RH, non-condensing
Power Requirements: 9 VDC, 350mA
Wall Transformer: 117VAC, 60Hz, +/-15%(included)
220VAC, 50Hz, +/-15%(optional)
Dimensions: 6.0"L, 3.75"W, 1.4" H
Weight: 1 lb., 9 oz. (including transformer)

way too expensive.

I dont feel like looking at the link but im pretty sure that ive boughten this one before the model number sounds familiar and its a pretty good model.
A guy on ebay sells them for $35 let me know if you get these for that much cheaper.