Yeah, there are 2 Batman Absolutes that are in the $200-range for Brand New. Luckily, they're reprinting The New Frontier in the next few months. Otherwise, that'd be another in the hundreds (sealed).
I'm not keen on buying open books only because I don't have time to examine them when they arrive. If there's a missing page, anything torn or damaged, etc. It's a small risk.
DC does a good job of making certain titles available across different formats, too. I think they're turning Kirby's Fourth World into Absolutes in 2020? I haven't read that series, but I've seen nothing bu glowing reviews of it. I think the omnibuses of them are in the hundreds )open condition).