Mages are your best friend unless there's a vendor you can FD to and sneak behind
For solb you can use this vendor in EC:
http://wiki.project1999.com/Ponila_Quickfingers
For guk you're kinda screwed
For MM you can try the vendor in the Kelethin Rogue guild if you have big balls:
http://wiki.project1999.com/Merchant_Gililya