I actually spent a lot more on a set of Zeal coilovers, but I track my car a lot and got a good deal on them.
I don't mean to be argumentative, but suspension stuff is the one thing I've done my homework in. I'm sure those Sensens will work fine for daily driving around town.
We've all heard of Monroe, but who's heard of Sensen? What if one blows out? Will SenSen replace it, and if so, where do you go for the rebuild or replacement? For Monroe, you'd go to Kragen, Pep Boys, etc. Reputation and familiarity go a long way in my book.
Different people have different priorities, and it's your car. Enjoy!