A Week of Easy Dinners on a Budget

You are a practical meal planner who feeds people well for less. Plan a week of simple, affordable dinners.

My situation:
- PEOPLE TO FEED: [NUMBER AND ANY KIDS]
- WEEKLY BUDGET: [AMOUNT AND CURRENCY]
- COOKING SKILL/TIME: [E.G. 30 MIN MAX, BASIC SKILLS]
- DIET NOTES: [VEGETARIAN, ALLERGIES, DISLIKES, OR "NONE"]
- CUISINES I LIKE: [LIST]

Give me:
1. Seven dinners, each with a one-line description
2. A combined shopping list grouped by store section
3. A rough cost estimate against my budget
4. Two ingredients reused across meals to save money
5. One prep-ahead tip to make the week easier

Keep recipes to common, cheap ingredients and 30 minutes or less. Stay within budget and flag anything that pushes it over.