My cut price 4K set of Nadia: Secret of the Blue Water arrived today.
Part 1 + Collector's Box came from CEX online and Part 2 came from Amazon.
My CEX gamble paid off big time; I had no idea if Part 1 would come with the collector's box, but fortunately it did. It even arrived with the bit of cardboard mentioning space for Part 2, as well as the information sheet! There was also some leftover CEX sticker on the front of the box, but that was nothing a cloth dabbed in a bit of rubbing alcohol didn't solve.
The only negative was that there is a small dent on the back, near the bottom of the box, toward the spine. However, for the price I paid (i.e., £20 worth of unwanted Blu-rays in CEX vouchers) and considering its second hand, I can't complain really. The most important bit was the discs anyway, which are in immaculate condition.
In the end, it cost me £15 cash and 3 standard Blu-rays as trade-ins to get Nadia complete on 4K! I love animation from this era, so it's nice to have this as part of my collection for not very much cost.
Away from that, I also got Shin Megami Tensei V: Vengance from TGC during the 20% off period just gone on Ebay. This one was thanks to
@Lucky_Deity; as I saw they also received this. and I noticed the "Atlus" logo at the bottom. I thought "I've been loving Atlus games recently! I've never heard of this one though...". So I did a bit of researching and like most Atlus games it appeared to be standalone, so I thought I'd pick it up for a good price whilst I could.
Once again, the great people of this forum directing me toward greatness!
. I thought I had managed to get a copy of the Ultimate Edition of Patema Inverted but the place I bought it from screwed up so I bought the Collectors Edition instead. 
