My understanding is that evangs got a quote from SP and then split up the kits assuming that he could just divide the original price proportionally between them, which turned out to be woefully incorrect. The price of the secondary kit was so high that it jeopardized the viability of the base kit, and so the whole GB had to be scrapped.
The new GB is based on just two kits which are different from the selection of kits from before, including more novelty keys than before (e.g., there are more 1.25u novelty keys than last time).