That's a good tire, decent stickiness, good tread life. It's also been replaced by the Z 6. I'd check the tire manufactur date on the side of the tire, and make sure they aren't 'ancient'. The Z 6 has been out at least 2 years, now, and is another great street tire.
If the set of MEZ 4's are more than a couple of years old, you may want to skip them.
Does that price include mounting?