villain seems like a pretty solid player (20.78/7.79/3.25) - haven't seen him get out of line yet. Every time (before this hand) that he's raised pre-flop he's followed it up with a CB, which I was hoping to check-raise here.

Ultimate Bet
No Limit Holdem Ring game
Blinds: $0.05./$0.10.
5 players


Stack sizes:
UTG: $5.17
CO: $13.88
Button: $5.04
SB: $2.32
Hero: $16.24

Pre-flop: (5 players) Hero is BB with
UTG folds, CO raises to $0.4, Button calls, SB folds, Hero calls.

Flop: ($1.25, 3 players)
Hero checks, CO checks, Button checks.

Turn: ($1.25, 3 players)
Hero bets $1.25, CO calls, Button calls.

River: ($5, 3 players)
Hero bets $5, CO raises all-in $12.23, Button folds, Hero ?????

It's $7 more to call in a $22 pot - can I fold this? Should I have check/called instead?

Anyone else?

You are playing at the wrong site if there are "pretty solid players" at $10 NL. Switch sites.

Ohh, this is UB. Definitely switch sites.

You are beaten here close to 100% of the time.