I placed my EQ6RAIL order with Modern Astronomy right at the end of the business day on Wednesday, Aug 29. It arrived here today (Thursday, Sep 7). I count that as 7 calendar days. Nice quick turnaround for a domestic order, but really outstanding for an international order!
Total cost in USD was $172 after currency conversion and, I assume, some conversion fee from PayPal. Pricey for sure.
Installation was simple. I had had the mount apart previously to remove a bent/jammed bolt, so I had a pretty good idea what to expect. There are no instructions provided with the package, but this video told me all I needed to know for installation:
The package included grease, but I used SuperLube instead. I also put 2 small dots of RTV silicon below the new aluminum guide plate to, perhaps, stick it to the mount casting. Not sure if the spots of glue are in contact with the casting, though.
I did some indoor testing after installation with my Atlas fully loaded. The altitude movement was significantly smoother with the EQ6RAIL. I mean really smoother and dramatically less torque needed on the south bolt to tilt the mount. Maybe not quite night and day, but close!
I have to reserve final judgment until I have a chance to use the mount again under real conditions. Hopefully the improved altitude movement will translate to easier and more accurate polar alignment. I’ll report back here when I know the answer, but my initial impression is very positive.