chain suppliers by going to the manufacturer website. They have a "find a dealer" tab. Industrial dealers are way cheaper than Worst Marine or even Defender. Downside is you would have to get a barrel or possibly a half barrel to buy from them.
For my anchor chain (5/16 HT) a half barrel is 275 feet so it was not a problem getting what I needed.
BTW Acco is now owned by Peerless - has been for quite a few years now.
Good hunting!