Fun facts about the RS2: Heavily upgraded by Porsche and manufactured in Porsche’s factory! First ever hot station wagon which started the trend of fast station wagons cars First ever “RS” car from Audi.
Most of my collection is packed, because I don't want the cars to be ruined by moisture and air. There are some cars I really feel like opening however, so for those I buy 2 pieces - One to open and one to keep packed.
Part of the love in this hobby is also for the design you see on the packaging, called the card art. Some cars are collected for their cool card art too, not just the car, so that's another reason why many collectors would keep the packaging intact. Something you could consider as well. Happy collecting!
Local shops such as stationery or novelty stores, Hamley's, Crossword etc. If those aren't viable options, you can try your luck online on sites such as Karz and Dolls, ToyMarche, Miniature Toy Shop, etc.