Shop Addict says......its ok. Next time,do a proper assessment.
Check your times, drive time roundtrip, pre-shop preparation( reading guidelines,pulling up shop on internet,making copies of complex shops, shop time, photos etc, report time (I actually time myself)
Then you xan come up with a more objective amount, no guessing.
Akways ask for more, they can only say no, but they usually say yes!!!