Inventory System Sync With Xero

I run a small business selling one-off mid-century furniture online, at markets and through a partner store. Because every item is unique, I spend far too long digging through old paperwork whenever a VAT quarter rolls around... (Budget: £20 - £250 GBP, Jobs: Accounting, API, Bookkeeping, Cloud Computing, Data Integration, Google Sheets, MYOB, Xero)