Has anyone seen offers like this in the modeling industry?

I received this message from someone in the modeling industry inviting me to a 5-day “model retreat” in Spain. The cost is €1,500 all-inclusive, and they say I’ll get portfolio/Sed Card content and a chance to work with agencies afterward.
I’ve never had a legitimate agency ask me for money upfront. Has anyone dealt with this type of offer before? Does this look like a common modeling scam, or more like a paid portfolio/workshop event? Any red flags I should be aware