Odd Amounts

Hi,
I have the linking working well and this is an awesome plugin, but I am not bringing the costs through correctly on a couple of sites.
If the amount is not round, it will only bring the first decimal point, rather than round to 2 decimal points.

For Example, item costs £9.50, item shows as £9.5

Had a look through the code, but I can not find out how to fix, please help?

Many thanks,

Dean Mitchell

http://wordpress.org/plugins/portgorod-ocstore-opencart-product-widget/