You can buy it via Avnet (US distributor) for $88.99 + $8 (or so) S/H. They sent me a promotion code THXNN6W for free shipping. It is an entry level Zynq processor (single ARM core, pretty decent FPGA capabilities). It runs linux well. Remarkable learning potential for $100!
https://www.avnet.com/shop/us/p/kits-and-tools/development-k...
You can download the Xilinx IDE Vivado WebPack for free.
https://www.xilinx.com/products/design-tools/vivado/vivado-w...
Both Avnet and Xilinx require creating a (free) account.