Mar Ray Costume Shop 1244 E Dundee Rd, Palatine, IL60074 Mar Ray Costume Shop has been a favored establishment in the area since the '60s. The store offers every kind of get-up,…More from pirates and princesses to ghouls and goblins. Whether shoppers are looking to dress up for fun or for a big Halloween party, they know this is the place to go. Mar Ray moved from its Northwest Highway location to its current address and still maintains its loyal clientele. Both sales and rentals are available. Although not strictly a Halloween store, Mar Ray Costume Shop really hops as the leaves fall and October approaches. The staff can temporarilty turn anyone into a witch or warlock with an array of novelties and special effects to add exciting and realistic details to costumes. The shop is open year-round.