diff --git a/history.lua b/history.lua
index 4f65780..bd2b394 100644
--- a/history.lua
+++ b/history.lua
@@ -104,6 +104,14 @@ function private.daily_market_value(histogram)
 	return sum / limit
 end
 
+function private.daily_min_value(histogram)
+	for i, frequency in ipairs(histogram) do
+		if frequency > 0 then
+			return 1.1 ^ (i - 1) * 1.05
+		end
+	end
+end
+
 function private.push_data()
 	local data = private.load_data()
 	local item_data = data.item_data
@@ -115,6 +123,11 @@ function private.push_data()
 		if getn(item_record.histogram) ~= 0 then
 
 			local daily_market_value = private.daily_market_value(item_record.histogram)
+			local daily_min_value = private.daily_min_value(item_record.histogram)
+
+			if daily_market_value > 2 * public.market_value(item_key) then -- prevent people from poisoning our market value by posting lots of 200k auctions
+				daily_market_value = daily_min_value
+			end
 
 			if item_record.day_count == 0 then
 				item_record.EMA7 = Aux.round(daily_market_value)
diff --git a/scan_frame.lua b/scan_frame.lua
index 67d73d8..1263556 100644
--- a/scan_frame.lua
+++ b/scan_frame.lua
@@ -18,18 +18,26 @@ function public.start_scan()
 --    AuxHistoryScanButton:Hide()
 --    AuxHistoryStopButton:Show()
 
-    private.scanned_signatures = Aux.util.set()
+--    private.scanned_signatures = Aux.util.set()
 
     Aux.log('Scanning auctions ...')
     Aux.scan.start{
-        query = {},
-        page = 0,
+        queries = {{
+            type = 'list',
+            start_page = 0,
+            next_page = function(page, total_pages)
+                local last_page = max(total_pages - 1, 0)
+                if page < last_page then
+                    return page + 1
+                end
+            end,
+        }},
         on_page_loaded = function(page, total_pages)
             Aux.log('Scanning page '..(page+1)..' out of '..total_pages..' ...')
         end,
-        on_read_auction = function(auction_info)
-            private.process_auction(auction_info)
-        end,
+--        on_read_auction = function(auction_info)
+--            private.process_auction(auction_info)
+--        end,
         on_complete = function()
             Aux.log('Scan complete.')
 --            AuxHistoryStopButton:Hide()
@@ -40,12 +48,6 @@ function public.start_scan()
 --            AuxHistoryStopButton:Hide()
 --            AuxHistoryScanButton:Show()
         end,
-        next_page = function(page, total_pages)
-            local last_page = max(total_pages - 1, 0)
-            if page < last_page then
-                return page + 1
-            end
-        end,
     }
 end
 
@@ -53,6 +55,6 @@ function public.stop_scan()
     Aux.scan.abort()
 end
 
-function private.process_auction(auction_info)
-    private.scanned_signatures.add(auction_info.signature)
-end
+--function private.process_auction(auction_info)
+--    private.scanned_signatures.add(auction_info.signature)
+--end