Meritline offers the Komodo Controller 2-Pack for PlayStation 3
, model no. NXP3-050, for $13.50
. With free shipping
, that's $6.75 per controller and the lowest total price we could find for two by $12, although we saw them for $4 less three weeks ago (since expired). This wired controller features USB connectivity.
Also, if you just need one extra controller, a single unit is $7.99 with free shipping, which is a price low by $7.