Running Software (issues missing this information will be deleted):

• Addon version: 9.0.6
• Server patch: 1.13.7

Have you read the changelog? (please don't waste our time)
yes

Describe the bug
1x Scrap\addons\merchant\visualizer.lua:131: attempt to compare number with nil
Scrap\addons\merchant\visualizer.lua:131: in function <Scrap\addons\merchant\visualizer.lua:119>
[C]: in function sort' Scrap\addons\merchant\visualizer.lua:119: in function UpdateList'
Scrap\addons\merchant\visualizer.lua:54: in function <Scrap\addons\merchant\visualizer.lua:52>
[C]: in function SetShown' Scrap\libs\SecureTabs-2.0\SecureTabs-2.0-2.lua:91: in function Update'
Scrap\libs\SecureTabs-2.0\SecureTabs-2.0-2.lua:64: in function `Select'
Scrap\libs\SecureTabs-2.0\SecureTabs-2.0-2.lua:42: in function <Scrap\libs\SecureTabs-2.0\SecureTabs-2.0.lua:42>

Locals:
A = 961
B = 4540
nameA = nil
_ = nil
qualityA = nil
_ = nil
_ = nil
_ = nil
_ = nil
_ = nil
_ = nil
_ = nil
_ = nil
classA = nil
nameB = "Tough Hunk of Bread"
_ = "|cffffffff|Hitem:4540::::::::12:::::::|h[Tough Hunk of Bread]|h|r"
qualityB = 1
_ = 5
_ = 1
_ = "Consumable"
_ = "Consumable"
_ = 20
_ = ""
_ = 133964
_ = 1
classB = 0
(*temporary) = 1
(*temporary) = "attempt to compare number with nil"

To Reproduce
uncheck "character specific junklist" option, then talk to a merchant

Added check to prevent

That other one looks very similar, so i'm not opening another issue (no idea if i should or not, just tell me):

1x Scrap\addons\merchant\visualizer.lua:129: attempt to compare two nil values
Scrap\addons\merchant\visualizer.lua:129: in function <Scrap\addons\merchant\visualizer.lua:119>
[C]: in function sort' Scrap\addons\merchant\visualizer.lua:119: in function ?'
...ync\libs\CallbackHandler-1.0\CallbackHandler-1.0-7.lua:119: in function <...ync\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:119>
[C]: ?
...ync\libs\CallbackHandler-1.0\CallbackHandler-1.0-7.lua:29: in function <...ync\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:25>
...ync\libs\CallbackHandler-1.0\CallbackHandler-1.0-7.lua:64: in function SendMessage' ...ceScrap\libs\WildAddon-1.0\WildAddon-1.0-1.lua:83: in function SendSignal'
Scrap\addons\main\main.lua:71: in function ?' ...ync\libs\CallbackHandler-1.0\CallbackHandler-1.0-7.lua:119: in function <...ync\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:119> [C]: ? ...ync\libs\CallbackHandler-1.0\CallbackHandler-1.0-7.lua:29: in function <...ync\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:25> ...ync\libs\CallbackHandler-1.0\CallbackHandler-1.0-7.lua:64: in function SendMessage'
...ceScrap\libs\WildAddon-1.0\WildAddon-1.0-1.lua:83: in function SendSignal' Scrap\addons\config\options.lua:40: in function method'
...ddOns\Scrap\libs\Sushi-3.1-4\classes\core\Callable.lua:53: in function `FireCalls'
...s\Scrap\libs\Sushi-3.1-4\classes\buttons\Clickable.lua:39: in function <...s\Scrap\libs\Sushi-3.1\classes\buttons\Clickable.lua:34>