Yes! If future price is $1k, every extra share you can eek out by purchasing at a lower price is an extra 1k in your future pocket. 5% savings now is a 5% gain in the future. (Or, alluding to the 3 ramp, a few month shift in profit)
300 vs 450 is 50% more shares for the same cost and 50% more future value. (Present value too, when it gets to 450)
Ok, if you have a ludicrous number of shares, say 65.3 x Tt007_muliplier, it doesn't matter (similar to nuclear weapons and MAD), but for we mere mortals, it does.