Hi JenniferKTB and Kyrellrissler,
This is possible with an app! (unfortunately an app is required).
I have recently added a feature to my Draftable app (https://apps.shopify.com/draft-helper), which allow adjustment of price of line items in a draft order, you can set a higher price for the item in the draft order (higher than the price listed on your store).
After installing the app, you can go to your draft order, and select “More actions” > “Increase item prices”, then you can select the items which you want to increase prices, and input the new prices and click “Apply”.
The items in the draft order will then have this new price applied, and the product price listing on your store will remain unchanged.
Hope this can help! The Draftable app (https://apps.shopify.com/draft-helper) has a free plan which you can try this feature out.
Regards,
Axel Kee (developer of the Draft Order Helper app)


