$70 can get you these
CustomFitAutoAccess on eBay
Theyre pretty well made. high quality materials, perfect fit, studded rubber backing... and i got them to put the text on vertically along the outside for no extra charge. They really do make the car seem nicer.
Note that's a black S13 Silvia carpet and those are this companys Black mats. I think their charcoal would have better matched the carpet set.