[Kingly_Krab]

Untested, but should do what you want it to:

sub EVENT_SAY {
    my %trade = (0 => ["Undead Potions", "undead", 14180],
    1 => ["Dulsehound Potions", "dulsehound", 14188],
    2 => ["Grave Dust Potions", "grave dust", 14194],
    3 => ["Frosty Marble", "frosty", 132541],
    4 => ["Firey Marble", "firey", 132542],
    5 => ["Norrath Soldier", "norrath", 132543],
    6 => ["Soldier of Norrath Dust", "soldier dust", 132544]);
    if ($text =~/Hail/i) {
        plugin::Whisper("How are ya friend? I can tell by yer backbone several have been fell at yer feet. Well what I be missing in size I make up for wit dese here swords. Ya see me is looking for " . quest::saylink("Planar Essence", 1) . " to combine wit mah swords to become the most famous dwarf in all Kaladim.");
    } elsif($text=~/Planar Essence/i && plugin::check_hasitem($client, 132540)) {
        plugin::Whisper("It appears you have ventured into the terrible planes and killed a few of those creatures. Would you be willing to " . quest::saylink("bargain", 1) . " for a few items I have collected from all over the place?");
    } elsif($text=~/Bargain/i && plugin::check_hasitem($client, 132540)) {
        plugin::Whisper("Wonderful. Here is a list of items that I have and would be willing to trade.");
        foreach my $item (keys %trade) {
            plugin::Whisper(quest::saylink("link $trade{$item}[1]", 1, $trade{$item}[0]));
        }
    } elsif ($text=~/^Link/i) {
        if (length(substr($text, 5)) > 0) {
            foreach my $key (sort {$trade{$a}[0] cmp $trade{$b}[0]} keys %trade) {
                if (substr($text, 5) eq $trade{$key}[1]) {
                    if (plugin::check_hasitem($client, $trade{$key}[2])) {
                        plugin::Whisper("Sorry, but it appears you already possess a " . quest::varlink($trade{$key}[2]) . ", $name.");
                    } else {
                        plugin::Whisper("So you would like to " . quest::saylink("trade $trade{$key}[1]", 1, "trade") . " your " . quest::varlink(132540) . " for my " . quest::varlink($trade{$key}[2]) . "?");
                    }
                }
            }
        }
    } elsif ($text =~/^Trade/i && plugin::check_hasitem($client, 132540)) {
        if (length(substr($text, 6)) > 0) {
            foreach my $key (keys %trade) {
                if (substr($text, 6) eq $trade{$key}[1]) {
                    if (!plugin::check_hasitem($client, $trade{$key}[2])) {
                        $client->NukeItem(132540);
                        quest::summonitem($trade{$key}[2]);
                        plugin::Whisper("Enjoy your " . quest::varlink($trade{$key}[2]) . ", $name!");
                    }
                }
            }
        }
    }
}