My saddle height is over 80cm, with lots of drop even on my low trail bike that has a ton of steerer. Simple physics really. Most of the time I fall off my bike it is by going over the bars. I get a bit more brave on a bike with a dropper. This 95% applies to off road riding.
Only problem with the cheapo ebay one is that it is a straight post, yeah? I could probably slam the saddle back and get my position. The post makes that area look like shit anyway.