Brickpacker had an option to make BrickOwl prices a percentage above or below for Bricklink prices. Example: Bricklink price: 10 BrickOwl price: 11 Percentage increase is 10%
You can do this directly in Brick Owl (Inventory/Mass Inventory Update/Price-Percent Change). Bricksync should ignore this update in Brick Owl, as it will only copy the base prices from BL without modifying them.
Your best bet is to pick a few items and try it before applying the change to your whole inventory.
I want it to become: Bricklink Item: $9 The same item on BrickOwl: $10
I would raise Bricklink prices then put a sale on them so it would be $10 on BrickOwl and $11 on Bricklink but Bricklink will have a sale for it to become $9
Comments
Your best bet is to pick a few items and try it before applying the change to your whole inventory.
I want it to become:
Bricklink Item: $9
The same item on BrickOwl: $10
I would raise Bricklink prices then put a sale on them so it would be $10 on BrickOwl and $11 on Bricklink but Bricklink will have a sale for it to become $9
I think raising the prices on BL first then putting in a sale %age would work though.