Running an Indie Bookshop: What one process, tool, or supplier relationship transformed your operations?

Looking for concrete, field-tested changes that actually moved the needle for independent bookshops — inventory turnover, POS + web sales, cash flow, events, or local marketing. Please share first‑hand experiences only (no theory). When you reply, include as many of the items below as possible so others can adopt what worked for you:

• What you changed (single process/tool/supplier relationship). Be specific: vendor names, POS/software, spreadsheet template, ordering cadence, fulfillment partner, etc.
• The exact steps or template (paste CSV headers, reorder cadence, email/negotiation script, pricing formula, or a short workflow). Prefer copy-pasteable items.
• Commercial terms you negotiated (net terms, discounts, return policy, minimums) and how you asked for them.
• Integrations/setup: how you connected POS to web sales or inventory (which apps, APIs, middleware, estimated hours to set up).
• Before/after measurable results (turnover days, sell-through%, margin change, cashflow improvement, event attendance, revenue lift) and the timeframe.
• Any caveats, local factors, or follow-up steps you’d recommend.

If you can, attach or paste templates, screenshots, or links to walkthroughs. Also mention your city/region (local markets matter). I’ll collate responses into a short community playbook if people share replicable assets. Who’s got a play or vendor relationship that changed everything?