Other than Nybright sisters

[Vladesch]

How about willowisps in west commons.
You can hand the greater lightstones into one of the evil gypsies in sro and receive a book which sells for more than the GLS (as well as some xp) (smith tvyssa?)

All you need is a magic weapon, which you should be able to pick up for a few plat in ec tunnel if you're there at the right time. (or ask a mage if they would summon you a sword)

Just watch out for adds. Maybe pull them to a spot where they dont path. The guards wont kill them either (tho that probably doesnt matter for a SK) Apart from that they are real easy mobs and good money.