But, as we discussed a few posts back, it seems unlikely that standard newsstands were produced for all titles given how low the print runs of some of them were. These variants are variants of the newsstand copies, not direct. So no $1.99 newsstand edition surely means no $2.29 / $2.49 price variants.
If you are right though, and newsstands exist for all titles, then we're buggered as you can't find $1.99 copies on eBay for most of them, nevermind variants.
What sayeth thou?
( @RockMyAmadeus, come on, dive in man. Dive in! )