Buying any hardware before the halving is just a big unnecessary risk in my eyes. Best case is you get to mine for 2 weeks on the gravy train and then everybody else catches up. Nice, you just made probably less than $100 more than somebody who had no risk of the halving. (claps)
With increased risk comes possible increased profit. It is not a sure bet in any means, mining is getting harder and need cheaper electricity. But if price rises (and it depends how high it goes) getting rewards before having could be much more profit. I would guess it's more then 100 and in the hundreds... how many hundreds hard to say though.
We just don't know it is hard to say how much btc hopefully will go up to. But in this game it is normally the ones that take a little risk that profit. If you are looking for a sure bet not sure mining has been that for a while. But I know many people including I have managed to do it and enjoy it very much.