diff --git a/abrechenbarkeit.lua b/abrechenbarkeit.lua
index 79a4951..0358055 100755
--- a/abrechenbarkeit.lua
+++ b/abrechenbarkeit.lua
@@ -172,30 +172,27 @@ end
 
 local function r_user_post(username)
     local data = form_data()
-    local amount = nil
-    local comment = ""
+    local amount = tonumber(data.amount)
+    local comment = data.comment
     local pcode = nil
     local pcount = nil
-    if data.product then
+    if data.pcode then
         for p_barcode, p_amount, p_name in read_products() do
-            if p_barcode == data.product then
-                pcount = tonumber(data.count) or -1
+            if p_barcode == data.pcode then
+                pcount = (tonumber(data.pcount) or 1) * (data.negate_pcount ~= nil and -1 or 1)
                 pcode = p_barcode
-                amount = pcount * p_amount
-                comment = p_name
+                if amount == nil then amount = pcount * p_amount end
+                if comment == nil then comment = string.format("%s %d %s", pcount < 0 and "Buy" or "Restock", math.abs(pcount), p_name) end
             end
         end
         if amount == nil then
             return error_box("unknown product")
         end
-    else
-        amount = tonumber(data.amount)
-        comment = data.comment or ""
     end
     if amount == nil then
         return error_box("amount invalid")
     end
-    if comment:match("^[%w_ -]*$") == nil then
+    if comment == nil or comment:match("^[%w_ -]*$") == nil then
         return error_box("comment invalid")
     end
     local log = io.open("log", "a+")
@@ -241,7 +238,7 @@ local function r_user(username)
             ]], format_duration(os.time() - last_txn), username))
         end
         print([[<div class="transactions container firstchildlarge">]])
-		print([[<div class="amount-presets backgroundbox">]])
+        print([[<div class="amount-presets backgroundbox">]])
         for _, type in ipairs({ 1, -1 }) do
             for _, amount in ipairs({ 50, 100, 150, 200, 500, 1000 }) do
                 print(string.format([[
@@ -266,10 +263,23 @@ local function r_user(username)
             </form>
             <form class="transaction box backgroundbox" action="" method="POST" id="buy_product">
                 <h3>Buy Product</h3>
-                <label for="product">Product: </label>
-                <input type="text" name="product" id="product" />
+                <input type="text" name="negate_pcount" value="1" hidden />
+                <label for="pcount">Count: </label>
+                <input type="number" name="pcount" id="pcount" value="1" />
+                <label for="pcode">Product Barcode: </label>
+                <input type="text" name="pcode" id="pcode" />
                 <input class="amount-neg button" type="submit" value="Buy" />
             </form>
+            <form class="transaction box backgroundbox" action="" method="POST" id="buy_product">
+                <h3>Restock Product</h3>
+                <label for="pcount">Count: </label>
+                <input type="number" name="pcount" id="pcount" value="1" />
+                <label for="amount">Upstream price: </label>
+                <input type="number" name="amount" id="amount" />
+                <label for="pcode">Product Barcode: </label>
+                <input type="text" name="pcode" id="pcode" />
+                <input type="submit" value="Restock" />
+            </form>
         ]])
         print("</div>")
     end)
@@ -278,7 +288,15 @@ end
 local function r_log(filter)
     return respond(200, "Abrechnungen", function()
         print([[<table class="log">]])
-        print("<tr><th>Time</th><th>Username</th><th>Amount</th><th>P.-Barcode</th><th>P.-Count</th><th>Comment</th></tr>")
+        print([[<tr>
+            <th>Time</th>
+            <th>Username</th>
+            <th>Amount</th>
+            <th>P.-Barcode</th>
+            <th>P.-Count</th>
+            <th>Comment</th>
+            <th>Actions</th>
+        </tr>]])
         for time, username, amount, pcode, pcount, comment in read_log() do
             if filter == nil or filter == username then
                 print(string.format([[
@@ -287,7 +305,7 @@ local function r_log(filter)
                         <td>%s</td>
                         <td class="amount-%s">%.02f€</td>
                         <td>%s</td>
-                        <td>%s</td>
+                        <td>%s %s</td>
                         <td>%s</td>
                         <td>
                             <form action="/%s" method="POST">
@@ -302,7 +320,7 @@ local function r_log(filter)
                     escape(username),
                     amount >= 0 and "pos" or "neg", amount / 100,
                     escape(pcode) or "",
-                    pcount and tostring(pcount) or "",
+                    pcount and (pcount < 0 and "buy" or "stock") or "", pcount and tostring(math.abs(pcount)) or "",
                     escape(comment),
                     escape(username),
                     -amount,
@@ -399,12 +417,12 @@ local function r_products()
         	<div class="container">
             <form action="/?products" method="POST" class="box backgroundbox">
                 <h3>Add Product</h3>
-                <label for="barcode">Barcode: </label>
-                <input type="text" name="barcode" id="barcode" />
                 <label for="name">Name: </label>
                 <input type="text" name="name" id="name" />
                 <label for="price">Price (ct): </label>
                 <input type="number" name="price" id="price" />
+                <label for="barcode">Barcode: </label>
+                <input type="text" name="barcode" id="barcode" />
                 <input type="submit" value="Add" class="amount-ntr button" />
             </form>
             <form action="/?products" method="POST" class="box backgroundbox">
@@ -423,7 +441,7 @@ local function r_products()
                 <tr><td>%s</td><td class="amount-%s">%.02f€</td><td>%s</td><td>%s</td></tr>
             ]],
                 name,
-                price >= 0 and "pos" or "neg", price / 100,
+                -price >= 0 and "pos" or "neg", -price / 100,
                 barcode,
                 pbals[barcode] or "0"
             ))
diff --git a/script.js b/script.js
index 46f8961..1a494b8 100644
--- a/script.js
+++ b/script.js
@@ -3,7 +3,7 @@
 document.addEventListener("keypress", ev => {
     if (!(document.activeElement instanceof HTMLInputElement)) {
         if (ev.code.startsWith("Digit"))
-            document.forms.buy_product.product.value += ev.code.substring(5)
+            document.forms.buy_product.pcode.value += ev.code.substring(5)
         if (ev.code == "Enter")
             document.forms.buy_product.submit()
     }