Its a very well marketed and extremely popular machine Pete....
If you have the box you can get very close to what you paid for it on Ebay, or even posted here.
My advice, and of course advice varies, is to get a good used sovereign GT for about the same price as a new AT PRO
The SGT's are arguably the best non waterproof mineralized wet sand (non pulse induction) machines ever made. Certainly for the money. They are basically a non waterproof Minelab Excaliber II.
I guarantee you will find lots of modern currency every time you hunt with one. If you hunt long enough you will actually find the kind of things you are hoping to find also.
They are no longer popular right now because the Manufacturers have found that putting target ID meters on their low end machines enable them to sell for twice or three times as much as their base models, even though the ID meters perform questionably at best.
The SGT was one of the most sought after and popular detectors up until just about two years ago, and many old-timers swear by them still.
These machines set the standard not to long ago, and in the hands of experienced users continue to outperform even their intended replacements.....
Regards,
EP