Calculation error when using combinations with showing VAT and exc VAT at same time

[dansmiddy]

Here is the code I currently have 

<span id="our_price_display" class="price" itemprop="price" content="{$productPrice}">{convertPrice price=$productPrice|floatval}</span>
<br>
<div style="font-size:small" >{convertPrice price=$product->getPrice(true, $smarty.const.NULL, 2)} {l s='inc VAT'}</div>

It works perfectly showing the price without VAT above inc VAT in small,

 

 

This is until you use combinations and increase the price from combinations. 

 

http://www.ezecoms.co.uk/voip/18-basic-business-voip-solution.html#/50-contract-36_months

 

See this link. 

 

Any idea on how to fix this?

Edited May 31, 2017 by dansmiddy (see edit history)