What steps will reproduce the problem?
1. Install LSW
2. Install Auctioneer Suite

What is the expected output? What do you see instead?
Did not see skillup% in cost basis menu

What version of the product are you using?
r84beta

Please provide any additional information below.
Problem is at line 603 of lilsparkysworkshop.lua
"and not LSW.vendorAvailability"; is a bad check, because informant may already be loaded, causing this function to be defined.

Instead this works:
        if LibStub and not periodicTable then
            local lib, minorVersion = LibStub:GetLibrary("LibPeriodicTable-3.1", true)

            periodicTable = lib

            if periodicTable and not LSW.vendorAvailability then
--DEFAULT_CHAT_FRAME:AddMessage("using lib pt for vendor database")