 <p>One solution is to use a <code>Lookup</code> expression, with the minimum price as the value to match. This expression should give each vendor if there is a tie for the cheapest:</p> <pre><code>=Join(LookupSet(Min(Fields!PRICE.Value), Fields!PRICE.Value, Fields!VENDOR.Value, "pv"), " / ") </code></pre> <p>There may be a more elegant solution out there, but is the first one I found.</p>