Does anybody read this attribute grid posts? hope so :-)

I am using Attribute Grid plugin on my 1.5.5 Zencart. All working fine.

Since I want to use the attrib grid format for all my products including with only one single price option (to show layout and look uniform) , I have come across that if you do only have one grid option it is displaying and 'Option' (round) button without the quantity box. If I add another grid option then it display the both options as grid format with both showing quantity boxes.

What do I need to change in order to get using ONE Attribute Grid Option showing QUANTITY (with price option) box?