I don't do eBay (dirty rotten folks there), I found the same 10 pack of COP DG 508 on amazon for less than $90 + shipping

 

It can.

 

i would not buy uneek i to had a miss-fire, after talking to guys on here using them they had good luck so i bought them. i chased miss-fire for weeks ran great for one week then one at a time they where going out i have three left in i'm sure they will go out too. that is why they tell you to buy the ten pack because they know they are bad! i depend on my truck and am not going to carry spare parts knowing the junk i put in won't last it's a truck for hauling and towing not hauling and towing spare parts! you want advice buy the right ones not junk!!!!! that's my .02

 

Up to you, dude - you want to pay 8 bucks a cop or 50 to 80 bucks a cop? I'll take a chance on the cheap ones with LIFETIME WARRANTY, thank you. They are all made in China anyway.

 

I've been using the cheap ones for a couple of years no issues. Yes there are going to be failures right out of the box some are bad and some get ruined during installation. Generally your going to know if you got a bad one right off. Yes we recommend buying the 10 pack because its worth it to have spares. You can also save known good old ones it your really cheap. Then if you ever have failures your covered for quite awhile.

 

Well I already bought the uneek ones and they are working fine...

The misfire continued after i put them in but then it stopped shortly after, the truck wouldn't throw a CEL but seemed to have a lot less power then before....
I cleaned the MAF and the truck runs like new. I'm thinking that's what was wrong with it in the first place, not a COP but now I have 7 extra COPs in case one goes out (only 7 because one of the old rubber pieces was cracking and broke while taking it out)