shop.lib.php
***********************
// 금액표시
// $it : 상품 배열
function get_price($it)
{
    global $member;

    if ($it['it_tel_inq']) return '전화문의';

if ($member['mb_level'] >= 10 && $it['it_price_10'] > 0) {
        $price = $it['it_price_10'];
    } else if ($member['mb_level'] == 9 && $it['it_price_9'] > 0) {
        $price = $it['it_price_9'];
    } else if ($member['mb_level'] == 8 && $it['it_price_8'] > 0) {
        $price = $it['it_price_8'];
    } else if ($member['mb_level'] == 7 && $it['it_price_7'] > 0) {
        $price = $it['it_price_7'];
    } else if ($member['mb_level'] == 6 && $it['it_price_6'] > 0) {
        $price = $it['it_price_6'];
    } else if ($member['mb_level'] == 5 && $it['it_price_5'] > 0) {
        $price = $it['it_price_5'];
    } else if ($member['mb_level'] == 4 && $it['it_price_4'] > 0) {
        $price = $it['it_price_4'];
    } else if ($member['mb_level'] == 3 && $it['it_price_3'] > 0) {
        $price = $it['it_price_3'];
    } else if ($member['mb_level'] == 2 && $it['it_price_2'] > 0) {
        $price = $it['it_price_2'];
    } else {
    $price = $it['it_price'];
    }

    return (int)$price;
}


it_price_2 ~~ it_price_10
까지 필드추가하시면 됩니다.