If in the market for an "egg" style trailer check out fiberglassrv.com. They have a forum dedicated to Oliver trailers. Don't sign on the dotted line before checking out BigFoot. They are also moulded fiberglass but with regular interior finishes not fiberglass like the Oliver. The Bigfoot trailers are 8'-3" wide as compared to 6.5' to 7' width of the Olivers. This allows for a full bath and separate shower plus considerably more interior space and storage. They are also of superb build quality and are in the same price range.
Happy shopping.
