Michael,
Chalklands comments "Whilst the FL indians do fit with the JJ indians (same size, similar looking), in my opinion they are nowhere as good (Sculpting, painting and poses)." would be right.
On availablity of these figures, they were made in 2006. They are long gone from dealers and only come up rarely on eBay. If you think a BM01 to 03 are hard to find, a full range of the 10 sets of these are even more fun to find.
They came in the std Frontline green boxes with the std card ??? of 1000. There were only 150 sets made but the card in the sets will say ??? of 1000.
I do not know the full story behind why they were stopped. I think it was a quality issue with John and Frontline. They were made by Frontline for John. When they came out they were $20 USD per figure. So the single figures set was $20 and the 6 figure sets were $120 and so on.
There is not a lot of other info out there on the Old Frontline JJ sets. John did at one time have a section on his web site, but he has removed that now. Sager's web site has a section on it with the photos and the sets details. Apart from that nothing much else.
There is a RR-01 on eBay at the moment Item 120392982837 3 days to go currently $51 USD. But be careful, this figure has been sold before and returned by the purchaser and the seller is trying to sell it again without noting the minor damage to the back of the head. So be aware.
Hope this helps.
Andrew