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Tuesday 29 May 2018 at 23:30
I think you should be able to find XDP-300R for between $4-500 and the 30R for less than $300 (it also has sd card slots for expansion but it looks like the interface is not as full featured).
here's a recent ebay listing for a XDP-100R with 2 200GB cards
https://www.ebay.com/itm/Pioneer-XDP-100R-K...
Source: http://pinside.com/pinball/forum/topic/audiophile-ipod-299-sale-pioneer-xdp100r/page/5#post-4424490