There is a really great deal on chalk markers today. You can get this pack of 10 markers for $15.99. That works out to $1.59 per pen which is about half off what you might normally pay for these markers.
I have these and love them. They make nice clean marks on chalkboards and I love the vibrant colors.
Please note prices are valid as of 3pm PST on 6/4/16 and prices can change at any moment.