how much will it cost to clear up 8 tickets?

It will depend on what the tickets are for, where they are located, and whether they have current courtdates, or failures to apprear.  It will also depend on whether the charges are for trial, or not.  You should contact an experienced traffic attorney in your area to speak confidentially about this matter.  Once they have the above information, they should be able to tell you how much it will cost to clear them all up.