Hey, just wondering if these spark plugs are any good? Pretty cheap and sounds like there alright.

6 x HOLDEN VS VR KLG PERFORMANCE SPARKPLUGS 3 ELECTRDE - eBay Spark Plugs, Ignition, Charging, Car Parts, Accessories, Cars, Bikes, Boats. (end time 02-Nov-09 23:10:47 AEDST)

Any advice would help =).
Thanks Brendon