they would have some value without hyphens for sure..
as is:
low xx reseller
zero end user value
imho
ps ..and i would not be renewing them
i know you will be tempted to speak of how short/unique/rare/premium-lettered they are, and how "science-fiction/san-francisco business" with hyphen can be valuable and brandable - skip that, they are not
Well, just a little note from an other story - for my own website I bought M-S.link (MS would be better but its simply not allowed) and for an other project "A-B" in a ccTLD (since "AB" seems to be taken in most TLDs or expensive renewal). As an short alternative such domains can make some sense for end users - at least for one But I already sold such domains at some 100 Euro level (with .US TLD).