ok this is gonna be a pretty big list

sigelei fuchai duo
wismec predator
aspire archon
tesla invader 2/3 (not tc but a solid mod and 29.90)
pioneer4you ipv vesta
sense blazer 200
dovpo trigger
tesla wye
i joy maxo zenith
smoant battle star
pioneer4you ipv6x
pioneer4you ipv400

all under $40 with good reviews. if you are patient you can find really good sales that can bump you into a higher quality mod with the same price