I think you have stock 97' 14" steel wheels at about 18lbs.
If the 93' is a 13" wheel it should be around 16lbs.
$75 if you sounds good if you want the tires. The 2lb savings is just a little plus but shouldn't be the main reason to buy these wheels.
My Miata came with 12.3lbs wheels but are a bit ugly.
Table of Wheel Weights