From MaGog's logs for 13 May:

* Regional price for Star Ruler 2: Wake of the Heralds is $3.69 instead of $9.99 in RU, UA, regUZ

magog displayes 100$ as the price for blitzkrieg 3, a bug?

No. That's apparently the value GOG uses for "unknown price". They used to use $0 (or an empty string) but then it would appear as a free game in GOG's filters, and some people actually complained when upon release the game was not free.

ok thanks

From MaGog's logs for 16 May:

NOTE! CHANGED Megamagic: Wizards of the Neon Age, reg_price_full, RU: $14.99 ***TO*** $5.18
NOTE! CHANGED Megamagic: Wizards of the Neon Age, reg_price_full, UA: $14.99 ***TO*** $5.18
NOTE! CHANGED Megamagic: Wizards of the Neon Age, reg_price_full, regUZ: $14.99 ***TO*** $5.18

[Surprise!]

From MaGog's logs for 16 May:

NOTE! CHANGED Windforge, price_hist: ***TO*** On May 16, 2016, price changed from $14.99 to $9.99

This applies to US and all other regions, except of course:
NOTE! CHANGED Windforge, reg_price_full, RU: $4.36 ***TO*** $3.69
NOTE! CHANGED Windforge, reg_price_full, UA: $4.36 ***TO*** $3.69
NOTE! CHANGED Windforge, reg_price_full, regUZ: $4.36 ***TO*** $3.69





* Regional price for Exanima [In Dev] is $5.18 instead of $14.99 in RU, UA, regUZ

From MaGog's logs for 16 May:

NOTE! CHANGED Witcher 3: Wild Hunt, The, reg_price_full, CH: $57.69 ***TO*** $52.49
NOTE! CHANGED Witcher 3: Wild Hunt, The, reg_price_full, NO: $57.69 ***TO*** $49.79



NOTE! CHANGED Witcher 3: Wild Hunt, The - Game + Expansion Pass [Season Pass] [Premium], reg_price_full, CH: $86.59 ***TO*** $77.69
NOTE! CHANGED Witcher 3: Wild Hunt, The - Game + Expansion Pass [Season Pass] [Premium], reg_price_full, NO: $86.59 ***TO*** $70.89

From MaGog's logs for 17 May:

* Regional price for Banner Saga, The - Soundtrack is $8.65 instead of $7.99 in GB
* Regional price for Banner Saga, The - Soundtrack is $8.07 instead of $7.99 in NO, PL
* Regional price for Banner Saga, The - Soundtrack is $6.06 instead of $7.99 in AU, NZ
* Regional price for Banner Saga, The - Soundtrack is $2.89 instead of $7.99 in RU, UA, regUZ





* Regional price for MechoEcho is $21.91 instead of $18.99 in PL
* Regional price for MechoEcho is $21.89 instead of $18.99 in regDE, regIT, DK, MC, NL, NO, SE, CH, regCZ
* Regional price for MechoEcho is $20.39 instead of $18.99 in GB
* Regional price for MechoEcho is $15.89 instead of $18.99 in AU, NZ
* Regional price for MechoEcho is $15.09 instead of $18.99 in CA
* Regional price for MechoEcho is $10.99 instead of $18.99 in regAR, CL, CO, MX, PE, BR
* Regional price for MechoEcho is $5.89 instead of $18.99 in RU, UA, regUZ





* Regional price for Overfall is $17.30 instead of $14.99 in DK, PL
* Regional price for Overfall is $17.29 instead of $14.99 in regDE, regIT, MC, NL, NO, SE, CH, regCZ
* Regional price for Overfall is $15.99 instead of $14.99 in GB
* Regional price for Overfall is $15.59 instead of $14.99 in AU, NZ
* Regional price for Overfall is $11.89 instead of $14.99 in CA
* Regional price for Overfall is $7.09 instead of $14.99 in regAR, CL, CO, MX, PE, BR
* Regional price for Overfall is $3.69 instead of $14.99 in RU, UA, regUZ





* Regional price for Skyshine's BEDLAM Soundtrack is $8.65 instead of $7.99 in GB
* Regional price for Skyshine's BEDLAM Soundtrack is $8.07 instead of $7.99 in NO, PL
* Regional price for Skyshine's BEDLAM Soundtrack is $6.06 instead of $7.99 in AU, NZ
* Regional price for Skyshine's BEDLAM Soundtrack is $2.89 instead of $7.99 in RU, UA, regUZ





NOTE! CHANGED Shadwen, reg_price_full, CH: $17.29 ***TO*** $17.33
NOTE! CHANGED Shadwen, reg_price_full, PL: $16.99 ***TO*** $14.49

From MaGog's logs for 18 May:

NOTE! CHANGED Overfall, reg_price_full, regAR: $7.09 ***TO*** $7.99
NOTE! CHANGED Overfall, reg_price_full, CL: $7.09 ***TO*** $7.99
NOTE! CHANGED Overfall, reg_price_full, CO: $7.09 ***TO*** $7.99
NOTE! CHANGED Overfall, reg_price_full, MX: $7.09 ***TO*** $7.99
NOTE! CHANGED Overfall, reg_price_full, PE: $7.09 ***TO*** $7.99
NOTE! CHANGED Overfall, reg_price_full, BR: $7.09 ***TO*** $7.99
NOTE! CHANGED Overfall, reg_price_full, RU: $3.69 ***TO*** $5.18
NOTE! CHANGED Overfall, reg_price_full, UA: $3.69 ***TO*** $5.18
NOTE! CHANGED Overfall, reg_price_full, regUZ: $3.69 ***TO*** $5.18

From MaGog's logs for 18 May:

NOTE! CHANGED Ashes of the Singularity - Overlord [DLC], price_hist: ***TO*** On May 18, 2016, price changed from $0 to $3.99

* Regional price for Ashes of the Singularity - Overlord [DLC] is $4.59 instead of $3.99 in regDE, regIT, DK, MC, NL, SE, CH, regCZ, PL
* Regional price for Ashes of the Singularity - Overlord [DLC] is $3.69 instead of $3.99 in NO
* Regional price for Ashes of the Singularity - Overlord [DLC] is $3.47 instead of $3.99 in AU, NZ
* Regional price for Ashes of the Singularity - Overlord [DLC] is $2.79 instead of $3.99 in UA, regUZ
* Regional price for Ashes of the Singularity - Overlord [DLC] is $1.39 instead of $3.99 in RU





* Regional price for Duskers is $6.19 instead of $19.99 in RU, UA, regUZ





* Regional price for OmniBus is $11.52 instead of $9.99 in NO, PL
* Regional price for OmniBus is $11.49 instead of $9.99 in regDE, regIT, DK, MC, NL, SE, CH, regCZ
* Regional price for OmniBus is $10.19 instead of $9.99 in GB
* Regional price for OmniBus is $8.65 instead of $9.99 in AU, NZ
* Regional price for OmniBus is $5.69 instead of $9.99 in regAR, CL, CO, MX, PE, BR
* Regional price for OmniBus is $3.69 instead of $9.99 in RU, UA, regUZ

From MaGog's logs for 18 May:

NOTE! CHANGED MechoEcho, reg_price_full, CA: $15.09 ***TO*** $16.68
NOTE! CHANGED MechoEcho, reg_price_full, CH: $21.89 ***TO*** $18.90
NOTE! CHANGED MechoEcho, reg_price_full, NO: $21.89 ***TO*** $16.15

Omnibus prices before the game is even out?

Regional prices are often set a day or two before the game releases, so I expect it'll release today or tomorrow.

Interesting.