Performance sells theirs ridiculously cheap when they are on sale. When you put your new inner tubes in, add a pair of good quality tire liners, I use Slime brand but there are others. These are like armour between the tread and tube, you can usually plow right through broken glass and thorns with no damage.
The city slicks on that page, at just 6.99 ea on sale, when pumpep up to 85-90 psi will transform your bike into a speed machine. (though being where there is real weather I suggest something with a little tread, like their metro-k) Most people hesitate to invest money in new parts for an old bike when they take up commuting by bike, or think a MTB must be slow. Not true. Ride safe and always with a helmet, brain injuries don’t heal and one Gary Busey is enough.