LV-109 could be TOTL in Alpine/Luxman line in late '80s but its average Yahoo auction re-sale value in Japan is low at 15,000 yen (same as LV-103u). Here are average quotes in the last three years for other used upscale Luxman units that have appeared or were mentioned on this forum recently, not necessarily TOTL: LV-107u - 30,000 yen, L-530 - 25,000 yen; L-540 - 50,000 yen and L-570 - 70,000 yen.
But then again, if I saw an LV-109 in good condition and it's priced below five figures, I'd probably buy it. I think it is a good buy for a collector. It could serve as sample of Alpine/Luxman's equipment output since it took over the Luxman brand in early '80s.