the usual way to get into eurorack is to spend a fuckload of time researching (months if not years) - so that you actually know what modules are before even looking at the pretty pictures - or you could just get a semi
whilst the pico system seems to be a reasonably well specc'ed system - there are drawbacks - the main one being that the individual modules (yes I know there's only 1 panel in the system) are all very small - usually best sandwiched between 2 bigger modules so that there is space to get to the control and the jacks and in this case they are sandwiched between 2 modules the same size they are
I think the only market for this (either as a rack module or as a standalone desktop unit) is beginners - so your re-sale market is starters who particularly want to get trapped with these modules
personally I would do the research, save the pennies, try and actually play with a modular either at a store or through someone locally and then buy a case and a few modules that you actually want and have a decent idea about what they do - rather than rushing into buying a system that you can't see any users of
it may be that after having done the research then you still decide you want this 'module' - then at least you are not going into it blind - as you appear to be
"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia
Utility modules are the dull polish that makes the shiny modules actually shine!!!
sound sources < sound modifiers < modulation sources < utilities