Oh, no need. I did manage to finally snag a standalone copy w/ that awful steelbook :P when inventory briefly resurfaced again a few months ago -- I also recently snagged a copy of the Dr Strangelove 4K at very good price to boot... though none of the others made it to standalone releases so...
FWIW, Vol 3 went down below $70 at one point during BF shopping season, which I kicked myself for missing, IIRC, but I finally ended up ordering it for $75 a week or two later w/ a surprising Amex 40%-off deal (plus some promo credits I had gained), so... :lol::D
I had waffled about ordering at...