I get alterations done here often. A hem is only $8-$10. They will patch your children's knees too, because I'm not one that is afraid to say, I don't have the time to do it. They are fast and efficient, and the hems/seams always stay. They also do quilts/comforters that are not machine washable.
They are located in McCarran Market Place. I drop my dry cleaning off when I run my errands and pick it up when I get my coffee the next morning. They are so convenient and they do a great job for a really decent price.
This is a family run business and they are very friendly. They offer great customer service!