Let's say I have 100k nx. Should I gacha it, sell ap resets, or even tp rocks. Just an opinion and maybe some reasoning will do~
Go on an uber gach run at either Mushroom Shrine, NLC, or whatever gachapon gives Black Versa Materia If you get at least 2 White Scrolls, Chaos Scrolls, or just one BVM, you'll be swimming in dosh
White Scrolls and Chaos Scrolls are quite rare and may not pay off in investing. In my sample of 1000 tickets, I only got 7. If I were in your shoes, I'd do an even split of AP Resets and Teleport Rocks because both are fairly easy to sell and I don't have to deal with selling multiple items.
As far as average long run mesos goes it seems that tele rocks is your best bet @ 4.8k mesos/nx if you sell them for 2m ea and buy the 2.5k bundle.
Its simple, gach a 9 atk pgc at kerning, then go shrine and gach 5 chaos scrolls, then go nlc and gach 5 white scrolls. Chaos the cape and get a 26 atk pgc, then sell it to plenty. Ez money.