I think a must have list is :
A razor + a blarw
A boar bruah
A soap or a cream
Plus an aftershave liquid / balsam.
Schick Injector razor + blade. Omega Proraso boar, Speick soap, Nivea aftershave.
Apart of the razor which you have to buy it used, I think you would do well with a 20 - 30 pound budget for some months.