That depends on how it is arranged. You can settle the case out of court with a legal agreement. If the case is going to go on without you, and you are suggesting blackmail or a bribe just so you don't testify or "forget" things during your testimony... that is illegal. I suggest talking to an attorney about what you have in mind.
£5 per fortnight I think
if you are not called into court, you will not have to testify
Perjury
If the jail or court house is setup to accept debit cards then bail can be paid with one. It is an acceptable form of payment but the accepting party has to have a way to accept the card as payment.
Absolutely not, and they will be charged with contempt of court if they show up to testify in that condition.
no
The circumstances under which one would have to testify in court will vary according to the jurisdiction. In the English courts a witness needs to be cross examined, so that if their testimony is key to the case, they can be subpoenaed. This compels them to attend court and testify.
Court testimony is the right to testify in court of what he/she saw during the incident.
No set number.
Yes.
This word has been recently used as a challenge to express sympathy; i.e, "Testify...".I have been called to testify in court as an expert witness.
Generally speaking anyone can be asked to testify. Though someone can be ruled as medically or mentally unable or incompetent to testify.