EAS diagnostic cable - where to buy

Yes, someone else with EAS problems, I was wondering where to buy a diagnostic cable for the RR classic for EAS. I all ready have the software from rswsolutions and see he no longer does the cable for classics. The only one I've seen is on ebay for £30 link. This seems a bit expensive to me, is there anywhere else to get them or should I just order this one.

Thx
Chris

you could ask rsw (malafax_dand i think his screen name is) if he has plans for the cable and build one!