Previous 3 enchants I listed were fine, 4th caused the error. Haven't had issues previously either, first instance of this error. It may have to do with a conflict with the background scan, the error came up 2 seconds before the scan finished processing.

1x ...rd_AuctionHouseUI\Blizzard_AuctionHouseSellFrame.lua:483: attempt to compare nil with number
[string "@Blizzard_AuctionHouseUI\Blizzard_AuctionHouseSellFrame.lua"]:483: in function CanPostItem' [string "@Blizzard_AuctionHouseUI\Blizzard_AuctionHouseCommoditiesSellFrame.lua"]:89: in function CanPostItem'
[string "@Auctionator\Source\Selling\Mixins\Commodity.lua"]:33: in function `UpdateCommoditySellButton'
[string "@Auctionator\Source\Selling\Mixins\Frame.lua"]:71: in function <...eAuctionator\Source\Selling\Mixins\Frame.lua:46>

Locals:
self = {
0 =
SetItem = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseCommoditiesSellFrame.lua:118
isInitialized = true
itemLocation =

{
}
UpdatePriceSelection = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseCommoditiesSellFrame.lua:48
RegisterHeader = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseUtil.lua:84
OnCleaned = defined @SharedXML\LayoutFrame.lua:102
GetMaxQuantity = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseSellFrame.lua:379
OnOverlayClick = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseSellFrame.lua:460
GetSearchResultPrice = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseSellFrame.lua:344
OnOverlayLeave = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseSellFrame.lua:456
SetSortOrder = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseUtil.lua:67
OnShow = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseCommoditiesSellFrame.lua:23
searchResultPrice = 8423900
LayoutChildren = defined @SharedXML\LayoutFrame.lua:165
GetCommoditiesSellList = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseCommoditiesSellFrame.lua:149
GetAuctionHouseFrame = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseUtil.lua:47
ClearSearchResultPrice = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseSellFrame.lua:340
QuantityInput = {
}
GetSearchContext = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseUtil.lua:92
CreateAuctionTabRight = {
}
isLayoutFrame = true
CreateAuctionTabLeft = {
}
SetSearchContext = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseUtil.lua:88
OnDurationUpdated = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseSellFrame.lua:370
CalculateFrameSize = defined @SharedXML\LayoutFrame.lua:121
MarkClean = defined @SharedXML\LayoutFrame.lua:93
GetQuantity = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseSellFrame.lua:445
GetSortOrderState = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseUtil.lua:58
spacing = 15
GetLayoutChildren = defined @SharedXML\LayoutFrame.lua:52
searchContext = 17
OnOverlayEnter = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseSellFrame.lua:449
IsDirty = defined @SharedXML\LayoutFrame.lua:98
OnLoad = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseSellFrame.lua:276
UpdateTotalPrice = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseSellFrame.lua:502
ShowHelpTip = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseSellFrame.lua:506
fixedWidth = 362.999969
headers = {
}
UpdateFocusTabbing = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseSellFrame.lua:365
GetPadding = defined @SharedXML\LayoutFrame.lua:112
UpdatePostButtonState = defined =[C]:-1
MarkDirty = defined @SharedXML\LayoutFrame.lua:78
GetDuration = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseSellFrame.lua:441
OnUpdate = defined @SharedXML\LayoutFrame.lua:72
OnOverlayReceiveDrag = defined @Blizzard_AuctionHouseUI\Blizzard_AuctionHouseSellFrame.lua:467
PostButton = {
}
CreateAuctionLabel = {
}
dirty = false
fixedHeight = 442.000031
CreateAuctionTabMiddle = {
}
HideHelpTip = define