I got my Fien over twenty years ago. It had variable speed control. It is loud but not as loud as some I have come across in use by others.
Amazon has blades in bulk (25-50) for around $1.00 a blade, also Temu ( I know they are Commies) they don't last as long as name brand but a $1.00 blade vs a $28.00, throw them away when they get dull.