Разделить цифры по три js
<script>[].forEach.call(document.getElementsByClassName('priceroom'), e => e.textContent = e.textContent.replace(/(\d)(?=(\d\d\d)+([^\d]|$))/g, '$1 '))
</script>
<script>[].forEach.call(document.getElementsByClassName('priceroom'), e => e.textContent = e.textContent.replace(/(\d)(?=(\d\d\d)+([^\d]|$))/g, '$1 '))
</script>