So yeah, I got it, and it's actually really fun.
It can be a bit slow to start, depending on how you spend your time. I went with the Trader Faction, and doing misions and trading took quite a while in my starting zone, because my ship wasn't too fast and my towns randomly generated at some distance from each other.
The town feature is also quite nice, in that doing a set number of quests for a town levels it up. each time it levels up it provides more quests and things, as well as letting you buy a better ship.
It does take forever to do that many quests, but I assume that if you were on a server and had 5 or 6 people all doing quests in an area, they'd level up quickly.
Combat is also quite fun, especially when you unlock a few special attacks, like the Fog Bomb (throw it on an area and any enemies inside can't target anyone or be targeted) or the Fire Bomb (does heavy damage on any one in it's area, and if it lands directly on a ship the AoE follows that ship).
I really enjoyed it, and ended up spending 5 straight hours on it yesterday (I forgot to eat dinner lol).
So yeah, I would recommend it, given that it's quite cheap.
Might as well get it now while it's 15% off. It's not an amazing reduction in price, since the game is pretty cheap anyway, but every little bit counts.