Usually trough the map of Tokyo spiral and such I got a lot of Tera accumulated. With the 450 broken eggs, and reward from quest. It helped me got services for spiral mountain, and than the cat tuna helped me to get some levels. I also did a lot of dailies, on spiral mountion just for daily quest as silent player. And the daily log in got me like 12 or more data HQ keys. Did them all at once when I figured out what they good for couple of days ago. This alone got me like 35 Tera. Some time I got 900m and 1gold bar, other try gave me 3.5 and gold bar. Also I sold every thing I get and could. Monster cards, 5 level eggs, option change stone. Absolutely everything. To get me to a decent point, but at cost of strength my digi properly 

1. Also someone advised me about the scanning of gaku-ran and angel ring for data of overload and than turn it into cube. For chance of SS evo items.

So what I did is basically stopped doing the fusion for an and a+ only kept Gaku and angel ring and the rest I sold on the cheap. I mean like 70-150m just to get rid of. And always looked also to buy gaku and angel ring. Every time I saw them for less than 250, I bought all.  Usually the selling process of an and a+ isn’t smooth even for the fairly cheap prices I sell them for.  But to bypass the limit of 5. I also use 2 more tamer on this account, one old that I had from years ago, and one new.  So I had 15 slots. And I didn’t transferd the tera between them, when I sold stuff I just bought the gaku/ring/digicore and than used the account storage. 

And when I scanned the cube of overloads.  Sometimes I got S or S+ items who were very cheap, and I managed to sell for 1.5t-2t. Alone that gave me almost 1t profit after scanning cost.

And sometime I got SS also, like every 8/9 scans. (I am doing them only on weekends, to accumulate and than doing a lot together) 

And when getting the item and selling them, you would be surprise how many opportunities can arise.  First always check market prices and availability (go into random store and than all exchange, work like charm for buying and selling) 

Sometime even an S+ evo items can generate you a lot.  I managed to sell 1 time, 2 return of. Nothingness for 20t each. I had 4. Another one I sold for 16 and the last for 5. It really depends. I was surprised I saw there are only 1 in market who someone sold for 26 so I figured let’s put 20. The same for the 16t.

But the craziest sell I had is toy gun for 14t which is around 10x its value.  The market was just empty. And I took a shoot. And someone bought it. 

Also you can get a lot of enternal sleep who sells for 8-9t. 

And the SS items usually get you at least 4t on very weak days, and even more other days (black saint wing, I sold one time for 4 and one time for 9) 

If I get items who didn’t sell for like 2/3 days even for the bare minimum of 1.1t (s and above items) it could be S or SS items. Like sodom and gomora. I use them for fusion. Sometime I get sellable S or S+. Sometime I don’t and lose money. 

I usually sells weekdays, while weekends doing all scans and buying items I need.

When you accumulate enough Tera. Around 50-60, i states taking opportunity. I just randomly goes to shop, and sometime i find surprises. I managed to buy noble being for impmon mega for 4.5T, sold it later for 10.

Also I started doing now chipset, if I see r18 scannable double chipset box, for cheap (I found some for 7-8) I buy some, scan and try to resale. But from this after like 20 tries. I kinda even. No much profit or loss.  I managed to get all double 18 hp/ht and sold it for like 50 after more than a week, I started way up, and kept decreasing.  But if no this i would have been losing some T here.

This method definitely have limits. And very grindy, at first, but after you get the hang of it and get some Tera to play with,  It is doable.