The price of equipment varies mate. Second hand kit in good condition would be your best route if cost is the number one priority.
I reload for three main reasons, and in this order of priority - 1) A greater degree of consistency from round to round which helps maintain accuracy, 2) Availability of ammo, 3) Cost.
How much then? Roughly -
A tub of powder (say £35) should fill around 600 rounds, maybe a few more.
600 Hornady V-Max (say £125).
Small rifle primers (say £25).
Brass? 100 Hornady (say £70). Obviously this figure will depend on how many times you re-use the brass.
So