13 weeks gender scan too Early .?

Would you ladies trust a gender scan as early as 13 weeks or would you say that it’s too early .? I had one done back at 13 weeks for $125 and so Eager

To start buying things for baby .

Currently 16 weeks and won’t get another until 20 weeks . Should I wait to buy things because the gender could change?

*had two techs disagree at the scan of gender. But one seemed to be more sure then then other *