How do you decide what price to buy the stock at after evaluating that it’s a good company stock to purchase?

Hi Hazel, valuations are more art than science. More importantly, the business we invest in must be of quality.

I generally compare the company's current price-to-sales or price-to-earnings ratio with history.

I talked about valuation in my article here about tech stocks and how I think about this topic. Hope this helps.