Because like 95% of the products work perfectly. Sundown has a very strict QC and if there's a scratch somewhere or excess glue, they won't sell it. There is a chance you get a sub that needs a recone but those are few and far between. There's a yardsale thread that was start today or yesterday here with the same info, most of the products work out of the box.I looked at the yard sale and according to the description, everything there has some sort of issue.
"These items primarily have *functional* issues such as a coil tick, a rattle, messed up or BROKEN terminal *, broken / not glued correctly dust cap, surround or spider glue issues, rips in the surround or spiders, no dust cap, etc."
Am I missing something? Why would I want subs with problems?