I've be scouring forums like this one for the last few months. I've also scoured the internet for affordable (or free) editing services. I wasn't looking for someone to write my essay for me, I just needed some feedback. I could have given it to my parents or friends, but I don't really trust them to be unbiased.
Anyway, I did a google search and found Kibin. It's a cool concept and I've been using it quite a bit. Basically, you have two options: edit someone else's paper and then you get yours edited for free, or you can pay and not have to edit. I've seen a ton of editing service, but nothing like this model. It's really, REALLY cool. I used to trade with people in forums and stuff, but that's just a huge pain. Whoever is behind Kibin, is solving a huge pain-point for students and I think it's awesome (Hence me finally signing up and ditching my lurker status here).
Anyway, check them out at kibin I've used both the paid and free models and have been happy with each. The benefit of the paid is you get it back in less than 24 hours and you don't have to review someone else's (which is nice sometimes).
Re: Can you check my text? Help with university application
It would be my pleasure to help you. Besides there are some mobile apps that can help to check your essay automatically. Look for helping helping here marketing your app where you can find great base of apps and choose you own.