when i got my first copy of S2 new from the shop(2001), it was an infact an empty display copy ( i got a replacement but was pretty pissed that it was empty)
they still have brand new ones on playasia for £19.10 get another one now and keep that one sealed. £19.10 is nothing and playasia has always been a trustworthy site no bullshit there.
I've used Play Asia before for my music and dvd's but Ebay's a lot quicker on delivery times. I'm just happy I've got a Japanese copy. Shenmue 2 in Japanese will be next, don't know if I'll go for a sealed one though.