So I got these... I believe they are knock-off PE combiner sets? They turned out to be pretty nice considering 2 sets + shipping cost me less than a single PE set.
https://world.taobao.com/item/534062582242.htm?fromSite=main&_u=v2o7o7jl8f0eI never actually owned the actual PE stuff so I can't say how their qualities compare. The black set is perfect but the silver set has stress marks around the foot peg ball joints. I imagine the other colors vary in plastic quality too.
Also, ALL the 5mm pegs had to be shaved down. They also seemed to shave really easily as I almost went too far on one of the hand pegs.
But all in all, I'm pretty happy.