When anyone is evaluating two vehicles, the MSRP is always one of the major metrics considered alongside horsepower, zero to 60 mph (100 kmh) times, fuel economy and, now with EVs, range figures. But a huge discrepancy in lease costs between Lucid’s Gravity SUV and the Air sedan reminds us that MSRP is actually irrelevant to many new car shoppers. It’s what they pay each month that matters.

And in the case of the electric Gravity, that monthly cost is far higher than it is for the Air, despite the SUV having a much lower MSRP, Cars Direct discovered. The website describes the Gravity as “a terrible vehicle to lease” due to its steep circa-$1,380 monthly lease cost, which is around 30 percent above what you’d pay to run an equivalent Air sedan.

Related: How To Lease A $69K Lucid Air For Just $510 A Month With $0 Down

Although Lucid says a more affordable Touring trim will join the SUV’s lineup later this year, for now you can only get it in Grand Touring spec. Its MSRP is $96,640, which looks good value next to the $112,400 Air Grand Touring.

But by the time you’ve factored in a down payment of $8,030 and the acquisition fee of $995, Lucid’s quoted $1,099 per month lease cost for a 36-month contract has ballooned to $1,380 before fees and taxes. Compare that with the Air Grand Touring, which costs $849 per month and a true price after down payments and fees of around $1,070.

So why does the Gravity cost $310 more to lease when it’s almost $16k more expensive to buy outright? The difference is down to the amount of rebates Lucid offers for the Air: they’re almost twice as big as the ones for the Gravity and include a $5,000 Air Credit, $1,000 On-Site Vehicle Bonus, and a $2,000 Conquest Offer, Cars Direct explains.

Right now the Air looks better value, especially since you can also order it in lower trim levels that really ramp up the savings. Go for the Air Touring and your overall monthly lease cost comes in at $731, which is close to half what the (admittedly better equipped) Gravity will cost you.