How do boutique owners evaluate and track supplier quality consistency over time?

Quality consistency — not just quality in the first order — is what determines whether a supplier relationship is worth maintaining. Here is a practical tracking system:

Quality tracking metrics to monitor per supplier:

• Defect rate: Pieces with defects per order ÷ total pieces ordered. Track monthly. Anything above 3% is a problem.
• Colour accuracy: How closely delivered pieces match the catalog/sample photo colour
• Measurement consistency: Same size across different production runs — measure key dimensions on arrival
• Dispatch accuracy: Were the right designs, colours, and sizes sent as ordered?
• Communication responsiveness: How quickly does the supplier respond to questions and issues?

Simple tracking tool: A Google Sheet with one row per order — supplier name, order date, dispatch date, defect count, colour match rating (1–5), dispatch accuracy (Y/N), communication rating (1–5). Review quarterly and make supplier retention decisions based on trend, not individual order.