Marketplace pickups are the largest single category of bulky-item bookings. Facebook Marketplace, eBay, Gumtree and Vinted Home all generate buyers who've committed to a piece of furniture and need it collected from a stranger's house. Seller's postcode is the pickup, your address is the drop-off. The driver meets the seller, loads the item and delivers.
The biggest practical issue is access at the seller's end. Narrow stairs, awkward doorways, parking restrictions. The driver will work it out on arrival, but flagging known issues in the booking notes saves time. Multi-stop bookings let you collect from several sellers in one run if they're in the same area. Same-day slots are common when sellers are flexible on timing.