I've gone up to $50 for scarce, out of print books I want to make sure I have lifelong access to.
For small-press-published books I'm unlikely to find secondhand for less than half the publisher's price if at all, up to $20.
For the average book I REALLY want, up to $10 if I've been searching secondhand sales & shops for a couple of years and haven't seen it yet.
For most books though? (including ebooks) It's a hard cut-off at $3. Maybe $5 if it's brand-new.
I've gone up to $50 for scarce, out of print books I want to make sure I have lifelong access to.
For small-press-published books I'm unlikely to find secondhand for less than half the publisher's price if at all, up to $20.
For the average book I REALLY want, up to $10 if I've been searching secondhand sales & shops for a couple of years and haven't seen it yet.
For most books though? (including ebooks) It's a hard cut-off at $3. Maybe $5 if it's brand-new.