Currently for marketplace app pricing we have to individually mark these up. There could be hundreds of these to manually apply mark ups too. It would be a good idea if we had a mark up slider (like for LC Phone) where we can set the price at all apps at say 1.5x and then customise individual app prices if required.
This way here in the UK I would be covered for VAT - as an agency buying the app for say $5 then apply the default mark of say 50c. If I leave it at 50c mark up then by the time I account for VAT in the UK then I am losing money on each app sale.