Sammy, or anyone else who are interested, If this makes any difference, my is a 9 months old baby and has been on the bike trailer for a month now. I pull him along to child care and back three times a week on the way to work. The child care is on the way and I use the bike trail all the way from home. The bike trailer made by Burley model Solo sits one child. I imported it because it's much cheaper even after import duties. It's 7kg and fold flat nicely and quickly. I've been very happy about it as it is light and strong and it has window shades etc.. for those sunny days and wind proofing for those windy wet days.
The thing about using the trailer is that the baby must be strong enough to hold it's head (some able to do so younger than others). I'm not if my baby is happy about it, but a few times now on weekend ride he has been sleeping in it through the trail and bumps etc.. May be sleeping is a way of dealing with fear
. In any case, In Australia, greenspeed.com.au imports the trailer, but I haven't seen them in shops. I got my from GEI.com on sale for $234 + transport + tax etc..