Having a fully working and truly portable IBM PC compatible computer back in 1988 was a truly exotic idea. Having one that was remotely affordable too was simply outrageous and that's why Amstrad must have been incredibly proud of its PPC512 Portable Computer. Built around NEC's 8MHz V30 CPU, sporting a LCD CGA/MDA screen, 512kb of RAM, a disk drive and a full-sized keyboard, the PPC512 was indeed a proper PC. One that looked very nice too.
To own it, you can bid on this Amstrad PPC512 auction on eBay for a fully working machine. The PC comes with manuals, power supply, a couple disks and a carry case. Seller ships to most places worldwide.