Searching and reading about funding, I see a lot of people referring to different rounds of funding (related to a given stage the startup is at). Still, I can only find limited information on the common investment/equity tradeoffs negotiated at each stage.
Since it's crucial to understand this to do proper research, I want to verify my understanding:
Am I totally off?
Insightful answers and pointing me to relevant info are very welcomed.
Attempting to establish what the "usual" investment sizes and ownership percentages taken by investors are across all startups is wrong and will lead you into problems. Market values for startups aren't tightly grouped around some average market value. Pre-money valuations are all over the map. Pre-money valuations will be influenced by comparisons to 'similar' startups in a 'similar' market/situation -- but that's not what you are comparing. Valuations will at least depend on:
Seriously, don't continue this line of thinking. If you want a good intro to financing, then The Founder Institute just posted some great videos: