bit pricey for a 400, though i guess they'd do a deal, but the monoshock chassis is SO much heavier than the twinshock, and i see it is electric start, so even more weight (battery, starter etc) .
though i did like the 400 when i had a spare 400 engine which i slotted into my #1 whilst the 600 was being repaired. not quite as fast, not quite the acceleration, but so free revving and vibe free ...