Selling an item of jewellery on Preloved. Had an offer, below what I wanted, but she was adamant she wanted the item. So far she's sent me 2 echeques via PayPal which I've refused to accept as they take up to 10 days to clear and she wants me to post the item ASAP. She's now saying she'll send me a bank transfer once I send her the post office tracking details. AIBU to think she's trying to pull a fast one and if I were to send it without payment first I'd never see any mine for it?!