How much should you charge to remove and lay 5 tiles?

I'd charge $150 plus expenses and I'd only take the job in hope of bigger things to come from this customer.

If you want to finish in one day you need to use fast drying mortar such as quick-set.
Trip to store for tile, grout and mortar.
Remove old tile and grout
Mix mortar
install tile (any cutting? more time, more tools, more clean up)
wait to dry (and clean up tools)
wipe off excess
go over with sponge
clean up job site.

Also, ask your self, why ire the 5 tiles damaged? Bad sub floor? will you have to come back and fix it again out of your pocket?