I didn't know if I would use a trailer or not and wasn't gonna pull a $350 trigger on a YAK to find out. I bought an Aosom for $69.99 (with shipping) off eBarf. The wheel bearings were sealed, sucked. $4.40 got a pair delivered to my mailbox.
I use it several times a week. I can't find anything at all to complain about it since I replaced the bearings, especially since I spent the savings on a Shower's Pass Commuter jacket. Better that being soaked and cold pulling a BOB.
Trailer without bag weighs thirteen pounds. Only ABOUT a two liter bottle of water more than several different popular sets of front and rear racks and 4 panniers----I've added it up several times with several different brands.