Maybe Baby Paint Brush and Royal Petpet Paint Brush
Baby Paint Brush is mainly 600k at hidden tower. And a lot of people also use it to equal to 600K at Trading Post. At Shop Wizard is mainly 590K to 610K.
Royal Petpet Paint Brush is a little lower in hidden tower(400k). But at Shop Wizard is magical sold 410K to 430K.
If you just only want to move NP to the other account, you can put many items of the same kind, and pricing 999,999. So that you can use another account to buy it