How low can it go? The Nintendo 2DS grants access to the 3DS' massive game library at the cost of losing stereoscopic 3D and the practical hinged form factor... and speaking of cost, it costs a tiny amount of money. Grainger Games are now selling the basic handheld for £78.99, the cheapest we've yet seen.
If you don't mind buying pre-owned, you can take another tenner off! Thanks to AtomHeartMother @ HUKD for this scorching bargain!