Zocco.co - Brandable, but not so strong with the extra "c"...if zoco.co, I would be more thrilled (zoco.com fetched $6,250). Optimistic view for a pre-purchase: $49 - $149
Paragraphs.de - Self explanatory. I would appraise this mid hundreds, up to high hundreds
Deinstall.net - Most commonly it is "uninstall", pretty crippling. But, I will be optimistic for a company branding around "deinstall", little different. My suggestion is low hundreds