How much did a plough cost in 1350?
The record: 1s 6d, 1351–70.
About $220 in today's gold
9 days of a farm labourer's pay.
The wooden frame; the iron share and coulter were extra (a foot-iron 5d). Source
Who could buy it
The lowest paid on each ladder of 1350 whose pay was enough:
In other words, a real purchase: weeks of work for a farm labourer.