I concur, surprisingly cheap if I may be so vulgar as to bring up the thorny matter of fiscal value.
With the new arms you get all new bushes & bottom ball joint, in some cases the manufacturer is so kind as to include new bolts.
& whilst on the subject of bolts...the right hand side bolts come out ok, Ford in their infinite wisdom dropped them in from the top, which in a way is a good show as if the nuts came undone for whatever reason, the bolts would be less likely to drop out, however, on the left hand side this is a bad show as you can't get the bolts out as the gearbox is directly above them.
Simple solution is to undo the bolts enough so you can cut the heads off with a disc cutter, then fit new bolts the wrong way around as it were.