I ordered a Proton Pack BLUE Power Cell light kit from this seller, and I am very pleased with it. Even with the item being shipped to me from Bulgaria, I received the item within 3 weeks which is pretty good for an overseas package.
The package was very well packed, and the quality of the light kit is excellent. I used the kit to upgrade a Spirit Halloween proton pack, and it fits into the pack with some creative placement (had to create a slanted foam piece to allow the board to slide into the spot at an angle, then used another foam block to ensure the board doesn't move out of position).
If I decide to mod the second spirit pack I have before I sell it I'll definitely buy another kit from this seller.