Depeche Mode - Info Needed For Some Releases I Saw Listed

[AudioChimp]

i came across a listing for a collection that was titled 'Depeche Mode - The Complete Albums & Singles'

this is not an official release but within the listing there was 4 discs titled below.

Remixes X1-X4
2013 - Remixes X1 - PXL-CDR0023 2013 (11 Tracks - 01:07:59 hrs)
2013 - Remixes X2 - PXL-CDR0024 2013 (5 Tracks - 00:56:12 hrs)
2013 - Remixes X3 - PXL-CDR0025 2013 (10 Tracks - 01:04:43 hrs)
2013 - Remixes X4 - PXL-CDR0026 2013 (8 Tracks - 01:00:06 hrs)

Just wondering if anyone has come across these 4 discs and if so could they shed some light as to what exactly is contained within these 4 cd's

i have search everywhere and cannot find anything regarding tracklistings with them.

Any help would be greatly appreciated