WoWInterface - Get AH Listing on Mouse Hover

I want to call the GetAuctionItemInfo api on mouse hover of an auction listing. I thought I could grab the ah index off of the frame name but I can't do that reliably.

Lua Code:

local function SetGameToolTipPrice(tt)  
 
    if (AuctionFrameBrowse:IsVisible()) then
 
        local container = GetMouseFocus()
        local ahIndex = container:GetName()
    
        --Prints "BrowseButton1Item", "BrowseButton2Item", "BrowseButton3Item", etc.
        --up until 8 (max items viewable without scrolling)!
        print(ahIndex)
        
        --call GetAuctionItemInfo(), with index stripped from ahIndex
    end
end
 
GameTooltip:HookScript("OnTooltipSetItem", SetGameToolTipPrice)

This works perfect if the listing is only a few items and has no scrollbar. The problem occurs when scrolling down a listing, the "first" listing you see is always "BrowseButton1Item" and the "last" is always "BrowseButton8Item". This leaves me without a useful index to call GetAuctionItemInfo with.