diff --git a/htdocs/core/lib/ajax.lib.php b/htdocs/core/lib/ajax.lib.php
index a1d2ac3cf02..a4a94fe66c9 100644
--- a/htdocs/core/lib/ajax.lib.php
+++ b/htdocs/core/lib/ajax.lib.php
@@ -171,6 +171,7 @@ function ajax_autocompleter($selected, $htmlname, $url, $urloption='', $minLengt
 									}
     							});
     						}
+    						console.log("ajax_autocompleter new value selected, we trigger change");
     						$("#search_'.$htmlname.'").trigger("change");	// To tell that input text field was modified
     					}
     					,delay: 500
diff --git a/htdocs/core/tpl/objectline_create.tpl.php b/htdocs/core/tpl/objectline_create.tpl.php
index 938a615ea77..b779dae443b 100644
--- a/htdocs/core/tpl/objectline_create.tpl.php
+++ b/htdocs/core/tpl/objectline_create.tpl.php
@@ -489,6 +489,7 @@ jQuery(document).ready(function() {
 	});
 
 	$("#prod_entry_mode_predef").on( "click", function() {
+		console.log("click prod_entry_mode_predef");
 		setforpredef();
 		jQuery('#trlinefordates').show();
 	});
@@ -496,6 +497,7 @@ jQuery(document).ready(function() {
 	/* When changing predefined product, we reload list of supplier prices */
 	$("#idprod, #idprodfournprice").change(function()
 	{
+		console.log("change #idprod, #idprodfournprice, conf->global->MARGIN_TYPE=<?php echo $conf->global->MARGIN_TYPE ?>");
 		setforpredef();
 		jQuery('#trlinefordates').show();
 
@@ -516,6 +518,7 @@ jQuery(document).ready(function() {
     	  		var options = '';
     	  		var defaultkey = '';
     	  		var defaultprice = '';
+	      		var bestpricefound = 0;
 	      		var i = 0;
 	      		$(data).each(function() {
 	      			if (this.id != 'pmpprice')
@@ -523,24 +526,23 @@ jQuery(document).ready(function() {
 		        		i++;
 
 			      		// If margin is calculated on best supplier price, we set it by defaut (but only if value is not 0)
-		      			var defaultbuyprice = '<?php echo ((isset($conf->global->MARGIN_TYPE) && $conf->global->MARGIN_TYPE == '1')?'bestsupplierprice':''); ?>';
-		      			if (i == 1 && this.price > 0 && 'bestsupplierprice' == defaultbuyprice) { defaultkey = this.id; defaultprice = this.price; }
-
-		        		options += '<option value="'+this.id+'" price="'+this.price+'"';
-		        		if (this.price > 0 && i == 1) { defaultkey = this.id; defaultprice = this.price; }
-		        		options += '>'+this.label+'</option>';
+		      			var defaultbuyprice = '<?php echo ((isset($conf->global->MARGIN_TYPE) && $conf->global->MARGIN_TYPE == '1')?'bestsupplierprice':''); ?>';	// We set here default value to use
+			      		console.log(this.id+" "+this.price+" "+defaultbuyprice+" "+(this.price > 0));
+		      			if (bestpricefound == 0 && this.price > 0 && 'bestsupplierprice' == defaultbuyprice) { defaultkey = this.id; defaultprice = this.price; bestpricefound=1; }	// bestpricefound is used to take the first price > 0
 		      		}
 	      			if (this.id == 'pmpprice')
 	      			{
 	      				// If margin is calculated on PMP, we set it by defaut (but only if value is not 0)
 		      			var defaultbuyprice = '<?php echo ((isset($conf->global->MARGIN_TYPE) && $conf->global->MARGIN_TYPE == 'pmp')?'pmp':''); ?>';
+			      		console.log(this.id+" "+this.price+" "+defaultbuyprice);
 		      			if (this.price > 0 && 'pmp' == defaultbuyprice) { defaultkey = this.id; defaultprice = this.price; }
-
-	    	      		options += '<option value="'+this.id+'" price="'+this.price+'">'+this.label+'</option>';
 	      			}
+	        		options += '<option value="'+this.id+'" price="'+this.price+'">'+this.label+'</option>';
 	      		});
 	      		options += '<option value="inputprice" price="'+defaultprice+'"><?php echo $langs->trans("InputPrice"); ?></option>';
 
+	      		console.log("defaultkey="+defaultkey);
+
 	      		$("#fournprice_predef").html(options).show();
 	      		if (defaultkey != '')
 				{
@@ -555,6 +557,7 @@ jQuery(document).ready(function() {
 	      		$("#buying_price").val(Math.round(defaultprice,<?php print ($conf->global->MAIN_MAX_DECIMALS_UNIT ? $conf->global->MAIN_MAX_DECIMALS_UNIT : 5); ?>));
 
 	      		$("#fournprice_predef").change(function() {
+		      		console.log("change on fournprice_predef");
 	      			/* Hide field buying_price according to choice into list (if 'inputprice' or not) */
 					var linevalue=$(this).find('option:selected').val();
 	        		var pricevalue = $(this).find('option:selected').attr("price");
diff --git a/htdocs/fourn/ajax/getSupplierPrices.php b/htdocs/fourn/ajax/getSupplierPrices.php
index c39acd9dd29..664c8a2da4e 100644
--- a/htdocs/fourn/ajax/getSupplierPrices.php
+++ b/htdocs/fourn/ajax/getSupplierPrices.php
@@ -38,7 +38,7 @@ $langs->load('stocks');
 
 /*
  * View
-*/
+ */
 
 top_httphead();
 
@@ -59,7 +59,7 @@ if ($idprod > 0)
 	$sql.= " WHERE pfp.fk_product = ".$idprod;
 	$sql.= " AND p.tobuy = 1";
 	$sql.= " AND s.fournisseur = 1";
-	$sql.= " ORDER BY s.nom, pfp.ref_fourn DESC";
+	$sql.= " ORDER BY pfp.unitprice, s.nom, pfp.ref_fourn DESC";           // Best price first
 
 	dol_syslog("Ajax::getSupplierPrices", LOG_DEBUG);
 	$result=$db->query($sql);
@@ -117,7 +117,7 @@ if ($idprod > 0)
 				$label = price($price,0,$langs,0,0,-1,$conf->currency)."/".$langs->trans("Unit");
 				if ($objp->ref_fourn) $label.=' ('.$objp->ref_fourn.')';
 
-				$prices[] = array("id" => $objp->idprodfournprice, "price" => price($price,0,'',0), "label" => $label, "title" => $title);
+				$prices[] = array("id" => $objp->idprodfournprice, "price" => price2num($price,0,'',0), "label" => $label, "title" => $title);  // For price field, we must use price2num(), for label or title, price()
 				$i++;
 			}