There's no accurate way to appraise anything without pictures. If your black cortex, late 70's Ludwigs are in great shape, then $700.00 sounds about right. If they are scratched up, dented, lifting seams, damage to the badges, any alterations, etc., then start subtracting. The hardware package will add some value if it is in good shape, however.

Try asking about the cymbals in the cymbal section of this forum. As far as I know, the older A's are starting to be pretty desirable...but yours sound like they might be circa 70's -ish along with your drums. A's are So plentiful, they just don't seem to command a high value at the moment. Many of them sound great, though.