Cheapest I have seen so far, have been having an eye out for these. Good reviews.
Brand SoundPEATS
Special Features Dual Dynamic Drivers & Built-in Mic,IPX5 Bluetooth Earphone with EarFin design & Touch Control Total 31 Hours Playtime (7 hours per charge, 4.5 times charge in case)
Microphone Form Factor With_Microphone
Microphone Technology Dual Mic
Headphones Form Factor In Ear
Last time their REP said will have special today may be wait a bit longer to see if anymore special code.
https://www.ozbargain.com.au/node/538388