Lin gives other old-book lovers a discount, but outsiders have to pay the listed price. If people come in pretending to know something they don't and try to haggle, he will not pay them the least attention.
內行人向林漢章買書，會獲得較便宜的折扣；外行人向他買書就得照定價買，如果要不懂裝懂或討價還價，他還會很有個性地來個相應不理。