Wait wasn't this OST also part of a larger boxset with other albums? Maybe not.
I'm not sure I understand why they'd sell it for cheaper after the 3% tax was introduced? Wouldn't they just try to either keep it the same (therefore adjusting the price before tax to 2,718Y), or at least make it a round number? Extremely annoying for shops and customers to handle that 2,627Y price tag.
I find it strange that the 2,627Y obi has no "compact disc digital audio" at the top of the front part.
Also, the 2,627Y version has no L inside a circle (Ⓛ) that indicates "This is a Japanese product".
Ja, seems like we need to find out both distributors. I can figure out that 'distributed by' is "配布元", this matches the 1st and 3rd character but not the 2nd. I guess the general meaning must be 'distributed by' anyway.
The distributor on the Sega Taikan (
https://vgmdb.net/album/731) is the one from the 2,800Y album you are showing, so I'd say that since Sega Taikan is more recent, the 2,800Y version of Taito Game Music is the reprint.