Is this superbad and way to wide? Villain is approx 15/10 over 400 hands.

Rather than just telling you the answer - lets look at how to solve spots such as these so you can answer them yourselkf in the future.

What pieces of info do you think we need in order to figure out if this call is good or not?

Hero's 3-bet range in given spot?
Say, shove top 20%?

if he ships 20%, it seems as very marginal but still +ev?'
Question is, is it standard for regs to shove j9s here?

if 15% is more likely we're losing money, but that seems kinda weak?

His range is one part we need to know for sure as well as how our hand performs v that range.
On top of this you need 2 other major pieces of info in order to be able to calculate if you can call with any given hand.

What do you think they might be?

A question you might ask yourself here is how will I determine how much hot and cold equity I need v his range in order to call +ev?

Re opponent behaviour - it is very player dependent. Even amongst regs I know some who 3bet 30% SB v BTN and some who only 3b 12%.

Some indicators (aside from 3b stat) if you don't have a lot of data might be:

*Vpip/Pfr - the closer these are, the more aggro our villain, meaning the more of his "defending" will be by 3betting over calling.
Also how loose he is. A villian who plays 16/14 isn't going to be jamming T8s or w/e over you here - where a 28/25 may well.

Pfr/Ats - This will indicate positional awareness, so if his steal is much higher than pfr he takes position seriously, and we can extrapolate from that he is unlikely to give btn steals much credit, and act ( 3b wide in this case) accordingly.

Another thing to consider is the make up of his range. Although it's pretty likely 97s should be 3b well before A5o, mostly you'll see the latter before the former, and that will affect how your hand performs.

fold. call aj up 88 maybe 77

I might jam J9s on you... Depends on how much you open button! If your opening 50% you really have to defend A9s. That's what colin252 is getting at. It's not just villains range but your own you need to consider...

I'm folding against a loose repush... blinds are still low to get huge parte of stack into the table. Evalutation error falso make you loose a lot here

Wait for better spots you're in middle stage yet, especially in that buyin game

If youre going to r/f to this guy, then your best play was not to raise in the first place.

Seems like a snap fold to me if he is playing 15/10.
If he is raising just 10% of hands his 20bb rejaming range will certainly not exceed 10%...in other words he is a tight player on a tight range.

ps
sandmanness is trolling you

A 15/10 player prob jams between 7 and 9% here.
The 2% difference is QQ+ and AK combos...i dont know if he jams these or 3B small.

If he jams everything he plays you should call 99+ and AK only.
If not, 88+ and AQ+

A9s-snap fold

I wasn't at all actually. If you intend to r/f to sb, then a limp is by far the most optimal play. You can limp shove over an iso, or call an open jam, and villains jam over limp range will be wider than his jam over a raise range. If no one isos, then you're going to flop with a solid hand in position.

I disagree limping is better than raising here....true we dont know BBs tendencies but SB is very tight.
When you have tight blinds i think youre just better off simply expanding youre range and start opening most of the deck and print preflop.
LImping is fine as.well since sb being so tight wont complete often...but it makes more sense when the blinds 3B/resteal a lot.

I don't think its far too wide but it is a fold. Even if your opening very wide an opponent with those stats isn't bluff shoving a very workable 18bbs.
Villain almost always has 88+ or better aces.

Yes in order to make that call, you would have to have a great read on V and understand what he may think of your range here. If you don't have this vital information it's a snap fold. In a vacuum I believe it's a fold regardless.