Yes, completely normal here in Switzerland. Approx. 90% vote by mail here [1].
[1]: https://www.swissinfo.ch/eng/politics/how-the-world-s-most-f...
[1]: https://www.swissinfo.ch/eng/politics/how-the-world-s-most-f...
Hopefully, in a twisted way, the fact AI enables convincing fake pictures and videos makes this vote buying scheme unpractical now, but it was a vector of attack until very recently, especially with encrypted communication and cryptocurrencies.