Hi,
The problem should exist before HikaMarket 1.5.1
In the view "productmarket | from_price", please replace
var url = 'index.php?option=com_hikamarket&tmpl=component&ctrl=product&task=getprice&price='+price+'&product_id=<?php echo $this->product->product_id; ?>&tax_id='+tax_id+'&conversion='+conversion;
By
var url = '<?php echo str_replace('\'', '\\\'', hikamarket::completeLink('product&task=getprice&price={PRICE}&product_id='.$this->product->product_id.'&tax_id={TAXID}&conversion={CONVERSION}', true, false, true)); ?>';
url = url.replace('{PRICE}', price).replace('{TAXID}', tax_id).replace('{CONVERSION}', conversion);
It should provide a good SEF url.
Regards,