By Jacob Kepler, Bloomberg Pyramid-range prices: Las Vegas Advisor says $40 rooms can be found at the Luxor hotel and casino.

Get to Vegas before Christmas for a big present: rock-bottom rates.

The Las Vegas Advisor says the best deals are from Sunday to Dec. 24. In its annual December rate roundup, the Advisor found 43 Las Vegas casino hotels with rooms for less than $40, vs. 38 last December. Among them are Strip properties such as Bally’s, Excalibur and Harrah‘s.

The total below $30 was 27, two more than 2008. They include Arizona Charlie’s Boulder; Binion’s (its hotel closes for an indefinite period Monday); Boulder Station; Circus Circus, El Cortez; Ellis Island Super 8; Fiesta Henderson; Fitzgeralds; Four Queens; Imperial Palace; Lucky Club Ramada; Plaza; Riviera; Sahara; Sam’s Town; Santa Fe Station; Stratosphere; Tropicana; Tuscany; Vegas Club.

A whopping seven casinos had rates below $20, vs. one in 2008. Texas Station came in lowest ($14.99). Others in the under-$20 club: Fiesta Rancho; Gold Spike; Golden Gate; Hooters; Palace Station; Wild Wild West.

Other good December deals found included Luxor ($40), Las Vegas Hilton ($41), Monte Carlo ($46), Hard Rock ($47), New York-New York ($48), Rio ($49), Paris ($55), Palms ($59), TI ($60), Planet Hollywood ($68), MGM Grand ($70).

The survey used multiple sources available to the public, Advisor publisher Anthony Curtis says, including casino reservation lines and Websites, third-party reselling Websites and the rate search engine Travelaxe. Rates change frequently, and the lowest ones may be sold out.

Rates are “marginally higher than in July,” Curtis says. So casinos may have “finally drawn their line in the sand” on lowering prices. “However, I think the low rates will hold for awhile and when they begin to nudge up, there will be tremendous and more targeted (packages).”

The Advisor (lasvegasadvisor.com), which costs $37-$50 a year, is currently offering a $9.95 special at the Golden Gate downtown for members through Dec. 24.