Update: Some offers mentioned below are no longer available. View the current offers here.Time is running out to take advantage of an incredible limited-time offer from Amex. Earlier this month, American Express announced increased sign-up bonuses on both the Starwood Preferred Guest Credit Card from American Express and its business version — both with their largest offers ever. But true to the “limited-time offer” wording, it will soon be coming to an end.If you’re thinking about getting one (or both) of the SPG Amex cards, now’s the time to get them. The personal card is offering 35,000 Starpoints after you spend $3,000 in the first three months, and the business version is offering 35,000 Starpoints after you spend $5,000 in the first three months. Both offers are ending on Wednesday, March 30, so be sure to take advantage of this incredible deal before the sign-up bonus drops back down.Le Meridien Bali Jimbaran is a Category 3 property, requiring 7,000 Starpoints for a free night.Starpoints are consistently ranked as one of the most valuable currencies in TPG’s monthly valuations, currently listed at 2.5 cents apiece. That makes the sign-up bonus on both of these cards worth a whopping $875!There are many ways to take full advantage of the Starpoints — your options are seemingly endless. You can use the points for six nights at a Category 3 property, such as Le Meridien Bali Jimbaran, a one-way business-class ticket from New York to Milan on Emirates or a redemption with the SPG Moments program — a TPG favorite — among many other options.Even with the future of Starwood and its beloved SPG program still unknown, now’s a better time than ever to sign up for the SPG Amex card. The 35,000-point bonus makes this card a no-brainer, so be sure you apply by this Wednesday, March 30, in order to take advantage of the card’s highest sign-up bonus ever!Sign up for our daily newsletterEmail addressSign upI would like to subscribe to The Points Guy newsletters and special email promotions. The Points Guy will not share or sell your email. See privacy policy.For more information on the card and the SPG program, check out the following posts:Highest Sign-Up Bonus Ever on SPG Amex Cards!How to Use 35,000 Starpoints from the SPG Amex CardWhy You Should Get the Starwood Amex Before the MergerStarting 2016 Off Strong With Starwood Preferred GuestUsing Starpoints to Book a Suite at W, St. Regis and Other SPG HotelsThe Award Traveler’s Guide to Starwood Preferred GuestOne Year of Earning and Burning with the SPG Amex9 SPG Properties that Make for Awesome Award RedemptionsWill you be signing up for the SPG Amex?