Roy is a good chap and I guess that he was trying to be realistic in advising you how long it will take to convert your IR. I imagine they are fairly busy at present and it would not be in their interests to offer you a 'deal' etc.
They have alot of experience in converting overseas IRs, more than other modular schools I would think. When I was there, the guys converting all took alot longer than the min hours. They have experienced instructors, a good fleet of PA-34s, the sims are indentical to the a/craft, and there is a CAA examiner on site. All things in your favour when looking to convert in as few hours as possible.
If you haven't already, I suggest you pop along to see the set up and chat face-to-face before discounting them.