RPM Trailer Sales is a long-established company dedicated to providing quality custom aluminum trailers, customized for your specific needs. Take a look at this 48’ Custom Aluminum Gooseneck Race Car Trailer loaded with custom features, full bathroom package, observation deck and so much more. This trailer is a must see!. Search for used merchandise trailer. Find Continental, Dorsey, and Wells Cargo for sale on Machinio. ... Also has 2 fridges, safe, fans, observation deck, ramp door for easy load and unload, Includes swing ou... $53,900. Kansas, USA. Trusted Seller. 1989 - Custom Retail Merchandise Display Concession / Craft Trailer ... Available for purchase.