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Early Edition taking too long, Discount for 1st Ed?

I purchased the early release of Mastering Bitcoin (2nd Ed) . It has been 5 months and only the first 5 chapters are available. The most recent update only added chapter 5 after waiting 3 months. Can I get the 1st edition with a significant discount while I wait for the 2nd ed to be updated (which seems like I will be waiting for a long time).
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