As cheap as Mahalo are, they are not the best to use as a first uke.
That being said, I have a Mahalo soprano Les Paul, and love it.
However, I made some changes to the uke myself. I sanded down the saddle to get the strings down to a more comfortable height ("action").
Changing the strings to a new set of Aquilas also improves the tone. They appear to come with Aquila strings (well, they're white), but they sound pretty dead out of the box. Possibly because they've been set up with those strings for a long time in the shop.
Still, you could do far better for a first ukulele if you get a Makala soprano or concert. Perhaps even an Oscar Schmidt. They're around the same prices as the Mahalos, but are generally more reliable as instruments. But then again... it does look like a Les Paul... *can't resist*.
If you do get the Mahalo, don't expect it to be uberly good quality. You'll notice problems such as uncomfortable high string height, and intonation being a bit iffy.
If you sand down the saddle, you could probably get it to feel somewhat comfortable play, and changing the strings to new Aquilas may make it sound decent.
The electronics aren't fantastic, but they're not completely garbage either. I have one of the newer models that take the 9 volt batteries instead of the old models that took watch batteries.
The output is not very loud, and with mine you have to keep the volume and tone knob fixed at the 2 'o clock position for it to sound balanced. Otherwise, some strings sound a bit louder than the others through the amplifier. I found this to be the case on 2 Mahalo Les Pauls - dunno if it applies to all of them.