I've had bad experiences with Silver Acre, though it was silver/bronze age I was buying. Grading was wishful thinking on their part, half of order wasn't fulfilled as online catalogue is only periodically updated, and they generally have pence issues instead of cents - which is something that should be mentioned in the listings. Oh, and they took nearly two weeks to arrive.
They have reprinted spider-man from the start marvel masterworks spider-man each volume is a years worth of comics and they are up to volume 8 now and you can buy them on amazon
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Silver Acre for a start. Or just look through eBay...