Good source for digital printing service?

I have a small epson photo printer (deluxe photo lab) that shoots out good 4x6's, however every now and then I have a picture that I'd like to have a larger print of. Where can I go to have a digital file printed, and how much does a high quality 8x10 or 11x14 cost?

I don't really want to buy a new printer because it's not all that often I need larger prints, and I also don't have the desk space or the $$$ for another piece of hardward in my office.

I use mpix or Winkflash and have been very happy with both. An 8 x 10 is $2 at both.

http://www.mpix.com/

http://www.winkflash.c​om/

http://www.whcc.com/

Very well rated. 8X10 will run about 2$.

Does any of the online photolabs do photo retouching. I might be shooting my first wedding and would like to send them to a pro lab for all the pro retouching im not good enough with photoshop yet to test it on someones wedding photos.