We purchased a Kidarooz Bike trailer for our two boys over a year ago from Costco for $159 USD.
It has been a fantastic trailer and definitely best bang for the buck. Unfortunately it doesn’t work well with my Davinci Melbourne’s disc brakes. There isn’t enough room to clamp the trailer onto the bike. I’ve had some success in clamping the Kidarooz trailer to the angled bar above the disc brakes but it sometimes slides down into the brake and I have limited my ability to turn sharply to the right as the bar starts to hit the quick release skewer on my rear wheel.