HUTCHISON AT & T Network Services has revised its price list for its NCR Safari Personal Communicator product. Prices listed in our Technology Post review of the product published last week gave the earlier costs. The Safari 3170, based on a 386 processor with four megabytes of random access memory and 80 MB of hard disk now sells for $23,500. With the mobile telephone handset - to allow for mobile data communication - the machine sells for $37,000.