Here’s the link to snag the PDF to send in your rebate:
Terms & Conditions
Receive a $50 mail-in rebate following purchase of a PEG-NX80V, PEGNX73V, PEG-UX50, OR PEG-UX40 CLI Handheld. Offer valid on purchase of eligible product from October 31, 2003 through January 3, 2004. For check delivery,please allow 8-10 weeks following receipt of properly completed rebate submission. Submission must be postmarked no later than 30 days after purchase date. Serial number, copy of dated purchase receipt, and copy of eligible product UPC code required. Mail submission to the provided address. Limit one rebate per household to end-users (not for resale). Delivery to P.O. Boxes is not accepted. Offer invalid and rebate checks are void if not cashed within 90 days of issuance and cannot be reissued. Offer is not transferable. Sony reserves the right to request additional information to validate a claim, making it subject to U.S. postal regulations. Offer void where prohibited, taxed or restricted by law. Sony is not responsible for claims lost, damaged, or delayed in transit. Submitted materials become Sony property. Products for which rebate is claimed may not be returned to retailers. Offer valid only in the United States, excluding territories. Offer not valid on refurbished or openbox returned products.