Who said that regional pricing made sense? To even begin to think to make sense, first it should be consistent:
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The newly added game Hyperdimension Neptunia Re;Birth2: Sisters Generation is regionally priced:
>>> It is $30.15 instead of $29.99 in DK, NO, PL, SE
>>> It is $30.09 instead of $29.99 in CH, regCZ, regDE, regIT, MC, MT, NL, SK
>>> It is $28.69 instead of $29.99 in GB
>>> It is $22.59 instead of $29.99 in AU, NZ
>>> It is $16.39 instead of $29.99 in regAR, BR, CL, CO, MX, PE, UY
>>> It is $7.46 instead of $29.99 in RU, UA, regUZ
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The newly added game Hyperdimension Neptunia Re;Birth2: Sisters Generation - DLC Pack [DLC] is regionally priced:
>>> It is $5.39 instead of $4.96 in PL
>>> It is $5.36 instead of $4.96 in CH, DK, NO, SE
>>> It is $5.29 instead of $4.96 in regCZ, regDE, regIT, MC, MT, NL, SK
>>> It is $4.89 instead of $4.96 in GB
>>> It is $3.75 instead of $4.96 in AU, NZ
>>> It is $2.49 instead of $4.96 in regAR, BR, CL, CO, MX, PE, UY
>>> It is $1.83 instead of $4.96 in RU, UA, regUZ
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The newly added game Hyperdimension Neptunia Re;Birth3 V Generation is regionally priced:
>>> It is $30.15 instead of $29.99 in DK, NO, PL, SE
>>> It is $30.09 instead of $29.99 in CH, regCZ, regDE, regIT, MC, MT, NL, SK
>>> It is $28.69 instead of $29.99 in GB
>>> It is $22.59 instead of $29.99 in AU, NZ
>>> It is $16.39 instead of $29.99 in regAR, BR, CL, CO, MX, PE, UY
>>> It is $7.46 instead of $29.99 in RU, UA, regUZ
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The newly added game Hyperdimension Neptunia Re;Birth3 V Generation - DLC Pack [DLC] is regionally priced:
>>> It is $1.09 instead of $0.99 in CH, DK, NO, PL, SE
>>> It is $0.89 instead of $0.99 in GB
>>> It is $0.69 instead of $0.99 in AU, NZ
>>> It is $0.64 instead of $0.99 in regAR, BR, CL, CO, MX, PE, UY
>>> It is $0.29 instead of $0.99 in RU, UA, regUZ
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NOTE: for some reason MaGog doesn't have regional info for Japan in some of the new Neptunia games, so I just assumed none of them is regionally priced (or blocked) there.