Investors seeking a cheap, no-frills way to sell 【C1】______ shares need look no 【C2】______ than the post box. Most stockbrokers offer bargain-basement deals on postal trades. They are ideal for selling a small holding for the lowest possible 【C3】______ But the arrangements leave investors 【C4】______ the mercy of the Royal Mail and a seller will not know 【C5】______ how much a sale will produce. Data 【C6】______ engineer Mark Stanistreet of Bradford sold by post after buying a few National Power and PowerGen shares when they were privatized. He says: 'I 【C7】______ really know where to go to for help. An information 【C8】______ with the shares gave details of Yorkshire Building Society's share shop service, which offered to sell for a flat fee of ￡5. ' 'It was an ideal first step that showed me how easy and cheap it is to sell shares. I 【C9】______ in a small way since then.' 'I use Yorkshire's telephone service, which has a ￡9 minimum fee.' Many stock brokers offer postal deals as part of their usual dealing services, but clients may 【C10】______ sell only big company or privatization shares this way. ShareLink's minimum postal commission is 7.50, Skipton Building Society's is 9 and Nat West's is 9.95. 【C1】______