bjjoondo 

I don't have any dealings with this particular model of child trailer but I can tell you I've used several different brands of child trailer and converted them to "utility trailers" over the year and they have ALL held up well hauling loads!! From the Wal-Mart specials to the last which was a used, older top of one of lines model so I don't think I'd worry about buying a used one as long as it's solid looking and has no damage. The overall parts are pretty standard and you can usually find replacements that will work just fine. My recommendation for price $200 to $250 MAX for a used high end child trailer in very good to excellent shape. JMHO, YMMV, have a excellent day!