10x30 = 300

If you pay 200-220 for the oz +2 grams, you'll make atleast 80 bucks per 30g you sell. If you live in a pretty big suburban community and your cheap prices get around town, you could make about 80 a day on the weekdays and a lot more on the weekends. When spring rolls around, and it gets warmer and sunnier, you can push around 3-4 oz per weekend and probably an oz every single actual day.

These are all rough estimates but about 5 years ago, in my area, there was someone exactly like you, good shit for cheap.. and he pushed 3-4 oz A DAY, winter or spring.

Good luck