A Spanish company recruiting volunteers to fight in Ukraine claims to be in contact with the Ukrainian Ministry of Defence, offering contracts for up to €3,400.
Applicants have to pay €700 to be trained for 5 days, and there is a high drop out rate. The company might be turning in a profit from all the applicants who pay the training fee and then quit
3,400 is a very high salary in Spain. I moved to Spain 4 years ago and thankfully earn more than that. Many people here earn less than 1,000 per month.
3,400€/month to be part of some special forces doesn't seem like a good deal? Like, sure. It's a good salary. But for joining a war where about a third of the soldiers already are casualties it seems a bit low. At least if you view them as mercenaries. For volunteers I guess that the ideological reasons play a huge part. But why does the company emphasize that they are only called volunteers to avoid legal issues? The whole thing seems quite sketchy.
It's nowhere near a good salary to be potentially shot at blown up and killed. You can get way more than that sitting at an office (most likely at home now due to WFH).
I wouldn't go at all but if I were to go I would probably want 5x+ that amount minimum due to the inheritent danger.
Edit: since you're at war you're effectively working 24/7, I fail to see how anything less than minimum 15-20x the amount is a good salary all things considered.
For comparison: Average gross income in Spain is €2,250 (net €1,785). Minimum wage in Spain is €1,260. Cost of living for a single with a moderate income is roughly at €1,750.
Spain has a high unemployment rate, currently. Especially the youth.