To get 500-900 SOL, go to the Remains, kill the Golems(and Goul) there, if you kill them all, go about 2-3 rooms away and come back to find them respawned. Kill them again. Hammers and Short Swords sell for 60SOL, while Maces sell for 70SOL. Gradius' sell for 50 SOL.It's time consuming, but worth it when you have a Sol Sword/Darkness Sword(2 of the 4 strongest swords) in your hands.It also helps when paying off Doomy, you shop-a-holics
. Also, watch for Golem +/ Goul +s. There 5x harder than your avarage Undead/blockhead. There also faster. I'd advise avoiding them untill your strong enough. Id advise Lv.60 with stats evened out as much as they can be, because there strong, fast, and barly take damage. For you weakling WANTING a Basterd Sword, I'd use Warewolf, because id does more damage. Basterds sell for 90SOL, also very usefull if you have your trying to make the Sol Sword!