IMP3Net does the Pipo W4 [Google Translate]. This is US$81. IMP3Net says it does have an IPS screen (although brightness is very low). Charging is via USB; there’s no separate charging port.
I have to say that if a tablet like this turned up in a brick and mortar store in the U.S. for US$99, I’d be very tempted to buy it. At the very least it could be a “toilet tablet,” for those times when I have to be away from the notebook but still have to do something (such as watching a video or reading a review or keep up with breaking news on Twitter). (And yes, I see the Toshiba eight-inch Windows tablet keeps dropping in price — but I’ve had bad experiences with Toshiba products.)
ZOL does the Chuwi V89 [Google Translate]. This sells for about US$212 for 2GBs of RAM and 64GBs of internal storage, quite a price jump from the Pipo W4! The build refelcts the price, with it looking like something recent from Ramos (which overall looks something like from Samsung). Plus, there’s a SIM slot for (China-compatible-only guaranteed) 3G. This is more of a business-style tablet.