If you research low Limit Texas Holdem online, you'll find that a decent player should make about 1BB/hr (one big bet per hour) on average, with a pretty large standard deviation. Unless you're playing aR$10-20 limit table or higher (which I was not willing to do), that hardly seems worthwhile.

1-4bb/100 is a good, solid win rate. 5-9bb/100 is an exceptional win rate. 10+bb/100 is absolutely crushing the game.

Our 4-betting range generally consists only of the very best hands: JJ, QQ, KK, AA and AK, say. This is even tighter than GTO, which will throw in some weaker bluff combinations to balance the 4-bets that are for value. HJ position calls 1 BB (20c).

A good winning 6-max reg will typically have a 4bet range in the region of 4-5%, whereas the average player has a 4bet range in the 2-3% region. In other words, it's not a big deal to slightly overfold when facing a preflop 4bet from an unknown.