If you're a big Analogue Pocket fan like us, then you're likely aware of the limited stock when it comes to many of their products. The popular Pocket Adapters are one of the items that are in and out of stock, likely due to their popularity, but also likely due to the fact that Analogue are putting its focus elsewhere recently.
That focus is likely on the Analogue 3D and the array of updates it's had over the last couple of months.
That said, Pocket fans will be glad to hear that the adapters are coming back in stock on June 12th, 8am PDT, ranging from $24.99 for individual adapters such as the SEGA Game Gear version, which is my personal favourite and is already back in stock.

However, the adapter sets that come in a set of three, featuring Neo Geo Pocket Color, TurboGrafx-16 and ATARI Lynx will cost $99.00 and are will be available in June 12th. I believe that the only way to obtain these three is by buying them as a part of the set, from what I can tell from their store listing. There are no individual listings of these adapters, and they will ship within 48 hours of ordering.
The SEGA Game Gear adapter is the only single adapter you can buy, which is likely the most popular of the four, in my opinion. So, if you wanted all four, it would cost you roughtly $125.
Hopefully, Analogue have made a lot of these, but in Analogue fashion, they may go back out of stock for a while. Who knows, but they're back, and we're happy about it, because SEGA Game Gear games and other small cartridge handheld consoles look and perform well on the Analogue Pocket.