"A total of 40k" – that's the boost, and another 5k is for buying back two boosted heroes.
Plus, you'll still need to boost them to white level, at least 10, and buy them back for 5k. That's 60k right there. And someone else wanted to buy boots and gauntlets, golems from dwellings, and feed the company!
I think you can still manage to scrape together 6, but 5 – that's debatable, yes :)
Added 1 minute ago
Okay, so you won't get a thousand, and that's a good thing.
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