You can send me your email addy, and i'll obtain the SAFEX prices and send them to you.
because of the drought in 2014/2015 we did enjoy higher than normal prices on maize.
the yellow maize price in 2015 peaked at around R3800/mt locally. informally as much as R4000/mt was offered at the farm gate.
then 2016/2017 happened. the best agricutural year in recorded history locally, and price on yellow maize at the farm gate is currently around R1700/ mt.
of course there is a lot of interference due the weak local currency, as we are price takers and not makers. so the prices are quite volatile.