Hi,
OVP means 'Original Verpackt', so it comes with the original box, it does by no means mean that it is new and unused. If you want to be 100 % sure that you are buying a new and sealed set it should read 'MISB' (mint in sealed box) or BNIB (brand new in box). 'MIB' means 'mint in box' but it still can mean that the original bags could have been opened and that it has been on display or even been played with. I am a 'mint in sealed box' collector, so I always try to buy sets which are either unopened or in case they have been opened all the contents and accessories are still in its sealed original bags. If you want to be absolutely sure than just write a quick email to the seller and ask if the set is 100 % new and unopened. In case it has been opened you can ask if all the figures and contents are still in its original sealed plastic bags, or just ask for more pictures.