Those numbers are way off. Why $2 (or even $1) profit from a $5 game?
It's just me... I like to understate numbers in process, some other people applying the -50% onto profit after the main calculation, well you know, your results are usually worst then planned.
$5 would be a very cheap game for Steam standards
From what I saw $5 could be an OK price for a game. I also tend to agree that $10 maybe is better as marketing policy, since good indie games are usually around $10. But it's just my first impression.
Also I have no idea how and why Analogue was sold in 20k copies, that is very good news actually

and it sold easily in excess of 5,000 units in it's first day on Steam
wow m8, that is a real accomplishment!

So I see your game name is "Hack, Slash, Loot"... I could never imagine that game without good art designers could be so well sold on Steam, please don't take it as offence, opposite it's like to take part in space race with having $1000 budget

, your example is very inspiring. Besides I see like only 6 topics on Steam forum. Summarizing all: Game is not popular but it is still very profitable and therefore successful.
Have Steam placed you on the first page when you started sales (you know, when they announce games on the very fist page of a Store)?