My FT817 (not ND version) has been owned from new way back when these radios were new "on the block" at the beginning of the millennium when the price was still £799. In all that time it has performed faultlessly, mainly at the 2.5W or less settings.
Mine has worked the world on SSB (even handheld) and I get WSPR reports worldwide at 1W, even on 40m with a small wire antenna. I intend to buy a new FT817ND soon so I can WSPR and work other modes at the same time. I can honestly say my FT817 does all I want and with 5W maximum output, which is more than enough power to work DX without upsetting the neighbours.
The best UK price currently seems to be around £513 but I hope to pay <£500 cash. At the current Yen-Pound exchange rate more like £450 is a reasonable price, unless the dealers want to be greedy. I hope the price includes the NiMH battery pack , charger etc. At best, the UK price fell to below £350.
The newer ND version covers 5MHz and all of 7MHz and has more rugged PAs.