I don't know how much it costs if you pay upfront but the bond in AirBaltic is 36K
I struggled to find another job, it was much better when AirBaltic was operating the B737 classic, it was much easier for the 737 pilots to move to another airline
What will help you is to convert your license to a UK one. Almost all my UK mates in AirBaltic now working in UK, cause of the UKCAA license and not cause of the A220 TR