If you forced me to make a sweeping, blanket statement, I'd recommend you NEVER buy a one-time offer cross sell…. Especially if it's for an infoproduct (like a how-to guide).
This advice is sure to piss off a lot of marketers as there's a lot of profit in these additional buys. Markeing "gurus" like Dan Kennedy and Jay Abraham tout one-time offer upsells as the fast path to easy cash. And this is absolutely true. Some buyers are in "heat" and are going to gobble up anything you offer just after …

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