“Spider-Man: Turn Off the Dark” may never get around to officially opening on Broadway. But no fewer than three new Spider-Man musicals opening this week are willing to go where that $65 million trouble-plagued behemoth fears to tread. And since their tickets range from zilch to $18, theatergoers not only get a bargain but reap the added benefit of avoiding the risk of injury from a falling performer — or a fired director.

“Spidermann” is the first to arrive, playing tonight and tomorrow at The Tank (354 W. 45th St.). The show, “a hastily constructed abstract musical” that was thrown together at “0.0000092 percent the budget” of Julie Taymor’s, recently debuted in Seattle. It features a coke-loving Spidermann who gets kinky with both his main squeeze, Mary Jane Taymor, and his Uncle Ben, who is never seen without his box of instant rice. Tickets are a mere $5.

Playing Monday night only is “The Spidey Project: With Great Power Comes Great Responsibility,” a “guerrilla theater project” directed by Justin Moran at The Peoples Improv Theater (123 E. 24th St.). Announced last month on a blog (thespideyproject.blogspot.com) and on YouTube, the show, which proudly proclaims that it has a budget of zero dollars, enlisted a troupe of volunteers to write, rehearse and perform a full musical in less than 30 days. And since no one in the show got paid, why should audiences have to? Free tickets for the 8 and 10 p.m. performances have all been snatched up online, but the creators promise that a limited number will be available at the door.

“Spidermusical” brings up the rear, opening on Tuesday for a leisurely weeklong run at the Mint Theater (311 W. 43rd St.). It has a pedigree, coming from the creators of “Perez Hilton Saves the Universe,” a hit at 2008’s New York International Fringe Festival, and featuring a cast of Broadway and off-Broadway veterans, albeit ones you’ve probably never heard of.

Billed as “destined to be the greatest musical involving spiders ever written,” it features an original rock score — including one tune called “If It Bleeds It Leads.”

But you’ll have to shell out for it. Tickets are a comparatively whopping $18. But hey, that still saves you more than a C-note compared to what you’d pay for its rather bigger-budgeted counterpart playing just a block away.