of course it is very needful to buy Quark if you have orders which requires Quark. If not, it is needless.
Viktoria Gimbe wrote:
Most CAT tools let you translate DTP file formats even if you don't have the specific DTP software. So, if it's for translation only, it's useless to spend that much money on Quark. If it's for DTP, it's a different story. However, there are practically no DTP jobs on ProZ and in other similar sites. Maybe you would find more DTP work in other freelancer sites focusing more on IT and other computer work jobs.
Most CAT software need the dtp software for extract the translatable text,
I have worked on many occasions on files that were created with DTP software I didn't have, but the client always exported the translatable text into a format I could work with - mostly Word. Usually, agencies are the ones who ask for DTP file translation - and they usually have a department who takes care of the technicalities, so I can focus on translation.
Usually agencies should prepare the files from dtp to cat format. You should need dtp software if you want to work with end clients.
With kind regards