I saw today that Diners Club is now issuing consumer credit cards in the United States, and I mentioned on Twitter that the $300 annual fee might be worth paying if you value miles transferred from the program at more than 1.7 cents. That's an extortionate annual fee, and I won't be applying for the card myself, but in case you do value your airline miles that highly I want to show my work to explain how I arrived at that number.
The Diners Club Card Elite card gives 3 points per dollar spent at gas stations, grocery stores, and drug stores. The problem is that gas stations and grocery stores are already such heavily-bonused categories that neither, alone or together, could justify paying a $300 annual fee.
You can already earn 3 flexible Membership Rewards points per dollar spent at gas stations with the Amex Everyday Preferred card, and earn 2 US Bank Flexpoints per dollar spent at grocery stores (worth between 1.33 and 2 cents each when redeemed for airfare) while paying just under 50% the annual fee of the Diners Club Card Elite.
Drug stores, on the other hand, are not as frequently-bonused as they used to be, so the most relevant comparison is the "old" American Express Blue Cash card, which earns 5% cash back at drug stores after the first $6,500 in spend per membership year.
I consider the risk-minimal amount of spend at drug stores per month to be $13,000 for a single person, in most parts of the country (two PayPal accounts and a Serve account, if you have access to Family Dollar store locations). It's easy to spend more, but that provides a benchmark for monthly drug store spend.
Over the course of a year, that amount of spend would earn $7,540 with the "old" Blue Cash card (since the first $6,500 would earn just 1% cash back), or 468,000 transferrable Diners Club points (in which case you'd incur an annual fee of $300).
At that point it's easy to see that the surplus of $7,840 implies a value per transferred mile of 1.67 cents. If you value each one of your transferred miles at more than that, you might be better off with the Diners Club Card Elite.
Note the emphasis above: it's not worth earning the transferrable points if you occasionally redeem them for high-value awards – you need to value all the miles you earn, on average, at over 1.67 cents each.
While I used the "risk-minimal" amount of drug store spend in this comparison, in fact this is very close to the analytical limit: doubling annual drug store spend yields $15,340 in cash back and 936,000 transferrable points, or 1.63 cents per mile, because of the slowly diminishing importance of the $6,500 "penalty." In other words, having either or both cards doesn't affect the imputed mile valuation by much, regardless of your annual spend.
So, what are your miles worth?
From FlyerTalk, here are the transfer partners for the Diners Club rewards program (the catalog requires you to log in to view redemptions):
- OneWorld: British Airways
- SkyTeam: Delta Airlines, Korean Air.
- Star Alliance: Air Canada, Eva Airways, SAS, South African Airways, Thai Airways.
- Independent: Alaska Airlines, El Al Airlines, (1000:20), Frontier Airlines, Hawaiian Airlines, Iceland Air, Southwest Airlines (1500:1200), Virgin Atlantic.
- Hotels: Best Western (1250:3300), Choice (1250:2400), Hilton (1250:2000), Hyatt (1250:750), Intercontinental Hotel Group (1250:1500), Marriott (1250:1500), Starwood (1250:750).
- Rail: Amtrak.
What caught my eye here is the not-totally-unreasonable hotel transfer ratios, particularly the "mere" 40% penalty you incur transferring your points to Starwood Preferred Guest. At 0.6 Starpoints per Diners Club rewards point, you can earn 1.8 Starpoints per dollar spent at drug stores. While it doesn't convince me personally, there's certainly a lot of value that can be unlocked there — plus it's a good escape valve in case you decide to apply for the Diners Club card and end up unable to use the points for direct airline transfers.
In any case, that's how I glance at an earning ratio and decide what mile valuation is imputed – plus a quick review of the Diners Club Card Elite!