>>504158696not a necessity, but very convenient. i played with the default tabs for years with no issues before premium tabs even existed. you just have to keep reminding yourself not to hoard all the little space-taking shit you're literally never going to use, like low value divination cards and essences etc, and that's easier than ever now with the commodities exchange. the only thing I'd call an almost-necessity is one premium tab so you can sell things easily without having to manually (or use sketchy third party software) post them on the forum for the API to grab them.
anyway with 300 points I'd wait for a stash sale then buy a currency, map, and one premium tab to start, then see how much space your divs, frags, essences, invites, tattoos etc take up among the rest to see if you even need a frag tab.