Which certifications are worth the money in this region?

Certifications carry different weight in different markets. Some are asked for by name in tender documents and job adverts, some open doors internationally, and some are expensive without being recognised by anyone who is hiring. Rather than a general list, it is more useful to know the specifics: which certification, what it cost you in money and time, and whether it changed what you were offered afterwards. Honest answers including the ones that were not worth it are more useful here than a recommendation.