Still getting my feet wet with shares but curious to know how others approach the dollar value of an investment.

Do you focus on a set amount eg $5000 and then just choose a stock regardless of the unit price, or do you focus on cheaper stocks (around the $2 mark) because it feels like you can gain more if/when the price goes up (because you were able to buy more) or do you invest in the higher priced FPH, RYM etc - where you have to spend more to get the same qty of stock