Quite simply, whatever a request says you will get paid to make the delivery is what you will get paid – plus the amount needed to reimburse you for the purchase of the product(s).
Example: a request is made for bread and milk, and the requester is offering $10 to have it delivered, and they say the bread and milk should cost no more than $7.00.
GrabMe pays the grabber: $7 (cost of bread and milk) + $10, for a total of $17.00. As well, were an extra tip of $3 given at the completion of the delivery, the total paid to the grabber would then become $20.
If this still isn’t clear, or your have any questions, please reach out to use at firstname.lastname@example.org.