How much did a longbow and arrows cost in 1350?
The record: 1s + 1s 2d, 1341.
About $320 in today's gold
13 days of a farm labourer's pay.
Royal purchase prices; four days of an archer's pay. Source
Who could buy it
The lowest paid on each ladder of 1350 whose pay was enough:
On a day's pay
On a week's pay
On a month's pay
In other words, a real purchase: weeks of work for a farm labourer.