mine was bought used off someone on another forum so it wasnt new. he ran it for 2yrs on his RA and I have run it for 2yrs so far with no problems so i must have been lucky and got a good one. When I bought it, i'm sure the Eclipse Performance web site was running at the time, but now appears to have disappeared.
The chips are still available on ebay, so probably is 3rd party now like you said, or old stock being sold by someone that worked there before.
anyway, new daughter board for £300:-
http://www.ebay.co.uk/itm/SUBARU-ECU...item20e194a018
or one with bidding starting at £160 and only 12hrs left on bidding:-
http://www.ebay.co.uk/itm/subaru-imp...item19e9f6e460