mi5moav
I am a designer, and I know that all you are going to get for 50 bucks is a relative of your aunt's creating a rough sketch of a logo, and it's not going to be very professional. Logos take time to develop and they don't happen overnight.
A good corporate logo with 10 iterations and revisions can cost upwards of $3000 or more. A smaller business could expect to spend $500-1000 for a logo depending on usage and distribution.
Any design firm can do a logo, but your aunt has to research a local firm that serves small-medium sized businesses, and she must like that firm's work; most firms have a style.
I have a few logos I have designed on my website:
http://www.flikworld.com/portfolio, though admittedly I have only spent about 10% of my time designing logos. There's too much other production design work to be done (ie. bread and butter moving text around and preparing docs for print kind of design).
There is a general rule in logo design: Keep it simple. One way to go against this rule (and make a crummy logo!) is to put your company text over a poorly designed picture of what your company makes. Awful! Stay away from this.
Basically, your aunt needs to find a logo she likes and add that research to her sketch. Then she needs to analyze how much her logo means to her. It's the first and most memorable thing about a business. Does she feel her business is worth $50? Food for thought.