I think they make you pay, or have some kinda deal on a game, but most of them I've looked at are always offline or play once a month online.
titled players who accept challenges from low ranked players

I like to accept challenges on live chess from any player, so long as its unrated and around 3-15 minutes. I don't play correspondence though.

WFM Monika Gedvilaite [http://www.chess.com/members/view/monika84] chose some days ago 2 players under 18 from her group to play a correspondence game against them for free (and advise them, too, afaik)
(i hear very good words about her coaching, btw)
I've seen a GM play low-rated players, but he offered draws or resigned all of his last online games here :/ (he told me it was a useless time expenditure for him)
http://www.chess.com/echess/game?id=105301762

IM Chessexplained is a good choice.He doesn't see the rating.He's around 2300+ but will explain you a lot during the game but you just have to be bold enough to ask him.I have played against him and he has explained me a lot.
You can find him here.He will only ACCEPT YOUR CHALLENGE IF HE HAS A LESS NUMBER OF GAMES (AROUND 50).Good Luck
http://www.chess.com/members/view/Chessexplained

I challenged about 10 titled players and only one accepted a daily game challenge sometimes if you go on open challenges on chess.com some titled players might be offering a game

@ThunderChariot plays me often in daily and blitz (unrated).
He won't play you anymore

Does anyone know of any active chess.com members who are titled and accept challenges from lower ranked players? I am currently around a 1450 in correspondence and I would like to play against a lower rated master (1900-2000). I think it would prove a valuable game to analyze and challenge me to thouroughly study each position during the game. Anyone know if such a player exists on the site?
Metra93 for daily/rapid

@ThunderChariot plays me often in daily and blitz (unrated).
He won't play you anymore
Yeah, he got banned.

Does anyone know of any active chess.com members who are titled and accept challenges from lower ranked players? I am currently around a 1450 in correspondence and I would like to play against a lower rated master (1900-2000). I think it would prove a valuable game to analyze and challenge me to thouroughly study each position during the game. Anyone know if such a player exists on the site?
Metra93 for daily/rapid
Ok, cool
Does anyone know of any active chess.com members who are titled and accept challenges from lower ranked players? I am currently around a 1450 in correspondence and I would like to play against a lower rated master (1900-2000). I think it would prove a valuable game to analyze and challenge me to thouroughly study each position during the game. Anyone know if such a player exists on the site?