panic buy it all now or wait?

[Steve]

The stuff that will keep you alive for the first 3 months is pretty cheap, water filters, pasta, vitamins and other essentials. Long term bits are more expensive, but some might be cheaper after an event. For example, I would like a better tractor and plough but they cost a fortune, so I spent the money on a good stock of diesel. When others have run out of diesel I will get my new tractor very cheaply.