Not sure what you are planning. For starters, call up Panasonic and Dell and ask if they have any solutions that meets your budget. They make industrial tablets with warranty and proper 24/7 after sales support. The prices are steep but for business, consider leasing the tablets. E.g. Puspakom is using Panasonic Toughpad in their vehicle inspection centers.

Panasonic Toughpad Series

Dell Latitude Series