345 Auction is an online auction house based in Pueblo West, Colorado, serving local, national, and international buyers and sellers. The company brings quality merchandise from estates, discontinued businesses, and bankruptcies to a worldwide audience, offering a convenient way to discover and bid on a varied selection of items. Its online platform supports bidding from desktop computers, laptops, tablets, and smartphones, with quick registration, secure bidding and payments, and access to current auction catalogs.

Buyers can also view short videos featuring selected auction items and arrange shipping through USPS, FedEx, or UPS; shipments are insured and require a signature. For sellers, 345 Auction offers online estate auctions and specialized services tailored to individual needs. The company also provides personal property appraisals, including CAGA-certified written appraisals for estate management, insurance, litigation, or valuation purposes.

Based in southern Colorado, 345 Auction combines online auction access with practical support for buying, selling, appraisal, and delivery. Customers can contact the company by phone or visit its Pueblo West location during weekday business hours