I'd totally pay $20-$30 per account to increase bank size. $30 or 2 GRACE is worth it to double it
Go large. I need TWICE my bank size or else I'm stripping my toon of things I actually USE and NEED occasionally or may have to change based on how the game changes.
On my tradeskiller alone, I need
His twink/buffing gear/weapons (about 8 packs worth)
2 backpacks full of tools
a dozen packs of Sector loot
a dozen packs of AI parts
2-3 packs of junkmetal
12 packs of silver/gold bars
4 packs of SL gems for bracers
4 Packs bracer parts (or I have to run to Jobe every time I make a set)
3 packs notum chip/frag (make them ONE item and stackable please!)
1-2 packs of omnifiers
1-2 packs of clanalyzers
4 packs of nano crystal IDs
4 packs of carbonrich rocks
8 packs of nodrops and buffing armor
4 packs of SL embryo stuff
8 packs of unstackable SL embryo stuff
2 packs of stat-buffing weapons
12 packs of AI armor parts pristine and mutated
6 packs viralbots, etc
2 packs unstackable basic armor
4 packs of gear/nanos I cant use yet because he isnt L220
6 packs of Sector 10 crap I dont know what to do with
10 packs of things I just want...event and social armor, special items from anniversary, UPH treats, costumes, etc. Its not much when you consider outfits are between 1 and 5 pieces each
4 bags of Notum Wars towers/tradeskill towers, parts, etc.
If I were to PVP at all, I'd need another 8-12 backpacks to swap out my gear.
This is in addition to an inventory full of backpacks with just five spaces open (one taken by yalm/key)
I cant get rid of some things because I dont want to keep transferring items and wasting time that way; things I make, I sell from that toon so I need an assload of materials and also storage because the GMI is only 21 spots. I would GLADLY pay to upgrade that as well.