There are two linkage kits available right now
@pillageTHENburn has a laser-cut wood kit available for $35 at https://www.etsy.com/listing/558743441/maslow-triangulation-linkage-kit
see Linkage kits are now available! ๐ for further details (including assembly instructions)
@dlang has a laser-cut metal kit available for $40 (including $5 for US shipping) pictures and details are at Metal Top Pantograph kit available
to purchase, send the payment via paypal to david@lang.hm
There are also kits available to clear routers with fixed handles (up to 12" wide) and can make versions to handle larger routers as well. If you need one specify in the order (for the initial couple, they will be the same price, but when I get the next batch made Iโll decide if they are costing me more or just make everything be the larger kit)
Both @pillageTHENburn and @dlang are producing more as the supply is used, so there are always going to be kits available (although various things, including holidays can cause delays in getting kits out)