Cost has gone up since 2011? :)
4464K214 Stainless full coupling, 1/2" pipe size, $3.42 (2015: $7.79)
4830K171 Stainless Steel 1/2" Close Nipple, Fully Threaded, $1.69 (2015: $2.18)
98126A797 Stainless Steel Shim(sold only as a pack of 10 @ $10.38) $1.04 (2015: $10.23 (pack of 5))...