Make your expectations clear at interview, give an exact figure (if asked for a precise number) and don't sell yourself short.
If you give a wide range, expect to be offered the bottom end.
If you're keen to secure the position you can always ask for a post-probationary increase or seek to set KPI's to boost your basic to be review in the near future.
To echo EVH, given an employer is likely to pay anything between 15-25% to replace you asking for several hundred or a few thousands pounds is small fry in comparison to the effort, disruption and general inconvenience of having to source your successor.
If you give a wide range, expect to be offered the bottom end.
If you're keen to secure the position you can always ask for a post-probationary increase or seek to set KPI's to boost your basic to be review in the near future.
To echo EVH, given an employer is likely to pay anything between 15-25% to replace you asking for several hundred or a few thousands pounds is small fry in comparison to the effort, disruption and general inconvenience of having to source your successor.