Not only is it cheaper, but if the parts are available, this could kill the Analogue Pocket. The biggest problem with the Pocket isn't the price; it's the fact that you can't buy the dang thing.
Funnyplaying is now selling its Game Boy Color clone globally. Built around an FPGA chip that plays Nintendo Game Boy and Game Boy Color cartridges, the Funnyplaying FB-GBC also wildly undercuts the Analogue Pocket by coming in at under $100.