Thumb Score: +43 Office Depot via eBay.com has 4-Pack Uni-Ball Signo Gel 207 Retractable Medium Point Pens (Black, 0.7mm) for $2.29. Shipping is free. Thanks CChoiVA Office Depot, Inc. via Walmart.com has 4-Pack Uni-Ball Signo Gel 207 Retractable Medium Point Pens (Black, 0.7mm) for $2.29. Shipping is free.