I am from Australia, but this is definitely not the cause. I have accessed Voidu and GG.Deals via several Vpns, and always get the same result - Voidu prices are listed incorrectly, every time.
The worst part is that the incorrect pricing is lower than the actual pricing, so this amounts to basically free promotion for a store that is not offering what is claimed. In addition, this means I cannot have an affected game on my wish/watch list, as I will be spammed notifications about this incorrect pricing.
If there are terms of service or use for gg.deals, surely this breaches them. At the very least, can we get a button to report wrong prices?