The advice my local sewing/vac shop gave me when I inquired about the Athena: "Stay away." Something about the uncertainty of 40 year-old electronic components and the cost of replacing them. I've seen this model for sale for a fraction of what the seller is asking (usually around $40) and I've occasionally seen them given away for free.
One of the nice things about vintage machines is their simplicity. Problems can be diagnosed and often resolved by even an inexperienced owner. With electronic machines, all bets are off.
Were you looking for particular features that the Athena 2000 offers, or (like me) drawn in by its retro design?